3938696064 has 64 divisors (see below), whose sum is σ = 11624634000. Its totient is φ = 1312897536.

The previous prime is 3938696063. The next prime is 3938696071. The reversal of 3938696064 is 4606968393.

It is a happy number.

3938696064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 3938696064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938696063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 566379 + ... + 573290.

Almost surely, 2^3938696064 is an apocalyptic number.

It is an amenable number.

3938696064 is an abundant number, since it is smaller than the sum of its proper divisors (7685937936).

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

3938696064 is a wasteful number, since it uses less digits than its factorization.

3938696064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139692 (or 1139674 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The square root of 3938696064 is about 62759.0317324925. The cubic root of 3938696064 is about 1579.2497725464.

The spelling of 3938696064 in words is "three billion, nine hundred thirty-eight million, six hundred ninety-six thousand, sixty-four".