38931949908 has 36 divisors (see below), whose sum is σ = 98564426688. Its totient is φ = 12957126480.

The previous prime is 38931949897. The next prime is 38931949919. The reversal of 38931949908 is 80994913983.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38931949897) and next prime (38931949919).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 817788 + ... + 864083.

Almost surely, 2^38931949908 is an apocalyptic number.

It is an amenable number.

38931949908 is an abundant number, since it is smaller than the sum of its proper divisors (59632476780).

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

38931949908 is a wasteful number, since it uses less digits than its factorization.

38931949908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682524 (or 1682519 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 63.

The spelling of 38931949908 in words is "thirty-eight billion, nine hundred thirty-one million, nine hundred forty-nine thousand, nine hundred eight".