Rihanna at the 2015 iHeartRadio Music Awards

Rihanna performs during the 2015 iHeartRadio Music Awards at The Shrine Auditorium on March 29, 2015 in Los Angeles, California. 

Kevin Winter/Getty Images for iHeartMedia

Plus, moves for Jason Derulo, Sam Hunt, George Ezra and Iggy Azalea.

As previously reported, Mark Ronson's "Uptown Funk!," featuring Bruno Mars, tops the Billboard Hot 100 (dated April 11) for a 13th week, claiming the longest run at No. 1 of the 2010s, and becoming one of just 10 songs to reign for at least that long all-time. Plus, Natalie La Rose reaches the top 10 with her debut hit "Somebody," featuring Jeremih.

Who else makes notable moves on the Hot 100 this week?

Jason Derulo, "Want to Want Me"
Derulo posts his 10th top 20 Hot 100 hit (27-17), as his new pop/funk single jumps 19-15 on Digital Songs (66,000 downloads sold, up 36 percent, in the week ending March 29, according to Nielsen Music). It also bounds 25-17 on Radio Songs (47 million impressions, up 16 percent).

Sam Hunt, "Take Your Time"
As it spends an eighth week atop Hot Country Songs, the love song reaches the Hot 100's top 20 (21-20). Helping grow its audience, Capitol Records is working it to pop and adult pop radio. (It's an MCA Nashville release for country.) Among early leaders playing the song at adult pop: WKRQ Cincinnati, WTIC Hartford, Conn. and WBMX Boston.

Rihanna, "Bitch Better Have My Money"
Rihanna blasts onto the Hot 100 at No. 23 with the chart's highest debut. The trap-infused track soars onto the Digital Songs chart at No. 5 (108,000). It was released on March 26. Following its first full week of sales and Rihanna's performance of the song at the 2nd iHeartMusic Awards, which aired live on NBC on March 29, it's likely to gain on next week's Hot 100. Radio is already interested: the single nears the all-format Radio Songs chart with 21 million in overall audience.

Both "Money," for which an official video is being planned, and prior single "FourFiveSeconds," with Kanye West and Paul McCartney (at No. 8), introduce Rihanna's forthcoming eighth studio album.

George Ezra, "Budapest"
The British singer-songwriter makes his debut on the Pop Songs airplay chart as "Budapest" enters at No. 38. On the Hot 100, the rollicking folk-rock track jumps 62-48. Boosting his profile, he sang it as the musical guest on NBC's Saturday Night Live on March 28. "Budapest" (which topped Adult Alternative Songs for 10 weeks) joins the cozy club of Pop Songs hits that namecheck European cities in their titles. Among them: "London Bridge," Fergie's first solo hit apart from the Black Eyed Peas, which ruled the Hot 100 for three weeks.

Other such hits that put themselves on the (European) map, going beyond Pop Songs: "Amsterdam (Gonna Write You a Letter)," a four-week No. 1 on Adult Alternative Songs for Guster in 2003, and "Istanbul (Not Constantinople)," a 1953 classic revived in 1990 by They Might Be Giants. (Honorable mention to 2006's No. 18 Hot 100 hit "Stars Are Blind," by heiress/socialite/singer Paris Hilton …)

Iggy Azalea, "Trouble" featuring Jennifer Hudson
A little more than a year after her Hot 100 chart debut, Azalea scores her ninth hit with "Trouble" (No. 67). Actor Sean Hayes helped push its prominence: he and his husband, Scott Icenogle, posted a clip of them miming the song to the former's Facebook page on March 26. The clip blew up immediately, having garnered 31 million views through April 1. That, in turn, helped sales of the track, which snared its best week yet (41,000, up a whopping 534 percent).

Additional reporting by Keith Caulfield