*Usher’s single “OMG” just clocked its third non-consecutive week at No. 1 on the Billboard Hot 100 this week.

The song also retakes the No. 1 spot on the Digital Songs chart with 236,000 downloads (down 2%), according to Nielsen SoundScan, after last topping that list three weeks ago. [Watch video below.]

Last week’s download champ, Katy Perry’s “California Gurls,” featuring Snoop Dogg, falls 1-3 on Digital Songs. [Watch their recording session below.]

The dip in sales combined with the largest airplay gain of the week (up 57% to 52.3 million listener impressions, according to Nielsen BDS), enables “Gurls” to hold a No. 3 spot on the Hot 100.

“Airplanes” by B.o.B featuring Hayley Williams moves up 3-2, and “Break Your Heart” by Taio Cruz featuring Ludacris continues to bounce around the upper portion of the Hot 100, climbing 5-4 this week.