2787992646 has 32 divisors (see below), whose sum is σ = 5631111168. Its totient is φ = 920172960.

The previous prime is 2787992611. The next prime is 2787992651. The reversal of 2787992646 is 6462997872.

It is a self number, because there is not a number n which added to its sum of digits gives 2787992646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408861 + ... + 415623.

It is an arithmetic number, because the mean of its divisors is an integer number (175972224).

Almost surely, 2^2787992646 is an apocalyptic number.

2787992646 is an abundant number, since it is smaller than the sum of its proper divisors (2843118522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2787992646 is a wasteful number, since it uses less digits than its factorization.

2787992646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7436.

The product of its digits is 18289152, while the sum is 60.

The square root of 2787992646 is about 52801.4454915772. The cubic root of 2787992646 is about 1407.4421116850.

The spelling of 2787992646 in words is "two billion, seven hundred eighty-seven million, nine hundred ninety-two thousand, six hundred forty-six".