38923881064 has 8 divisors (see below), whose sum is σ = 72982277010. Its totient is φ = 19461940528.

The previous prime is 38923881041. The next prime is 38923881107. The reversal of 38923881064 is 46018832983.

It can be written as a sum of positive squares in only one way, i.e., 31026004164 + 7897876900 = 176142^2 + 88870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2432742559 + ... + 2432742574.

Almost surely, 2^38923881064 is an apocalyptic number.

It is an amenable number.

38923881064 is a deficient number, since it is larger than the sum of its proper divisors (34058395946).

38923881064 is a wasteful number, since it uses less digits than its factorization.

38923881064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865485139 (or 4865485135 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 38923881064 in words is "thirty-eight billion, nine hundred twenty-three million, eight hundred eighty-one thousand, sixty-four".