3920987568 has 20 divisors (see below), whose sum is σ = 10129218008. Its totient is φ = 1306995840.

The previous prime is 3920987561. The next prime is 3920987579. The reversal of 3920987568 is 8657890293.

3920987568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3920987561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40843573 + ... + 40843668.

Almost surely, 2^3920987568 is an apocalyptic number.

It is an amenable number.

3920987568 is an abundant number, since it is smaller than the sum of its proper divisors (6208230440).

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

3920987568 is a wasteful number, since it uses less digits than its factorization.

3920987568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81687252 (or 81687246 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The square root of 3920987568 is about 62617.7895489772. The cubic root of 3920987568 is about 1576.8794317850.

The spelling of 3920987568 in words is "three billion, nine hundred twenty million, nine hundred eighty-seven thousand, five hundred sixty-eight".