Nope. His #1 spot has been taken by Rihanna. Her 77 videos on her VEVO channel have been seen more than 3,784,000,000 times, which is roughy two million more than what Bieber has for his 79 videos on VEVO.
Billboard also reports these stats:
1. Rihanna has 8.73 million subscribers to her video channel, a whopping 3.7 million more than Bieber. That tells you something about Rihanna fan engagement, doesn't it?
2. Bieber has 54,300,000-ish "likes" on Facebook. Rihanna has 72,300,000.
3. Other big YouTube stars include Psy (#3, 3.1 billion views), Eminem (#4, 2.4 billion), Lady Gaga (#5, 2.2 billion) and Shakira (#6, 2 billion).