Psy's "Gangnam Style" is no longer the most watched video on YouTube.
It's been edged out by Wiz Khalifa feat. Charlie Puth's "See You Again". At the time of writing, "See You Again" has 2,894,526,001 views while "Gangnam Style" has 2,894,182,054.
Still, "Gangnam Style" stayed at #1 for an impressive 1,691 days and will always remain the first ever video to hit over 1 billion views on YouTube.