1500 might be the standard if you're aiming for a certain price tier... as a Premium author. But, there are different tiers that authors generally follow.
800-1200
1300-2000
1500-2200
But it depends on the author's preference, of course. There's no "right way, wrong way" when it comes to the length if you're writing as a hobby.
And if you have a long chapter that is about to hit the character limit, why not split it and get double the views by making part 1 and part 2? lol