3931438038 has 32 divisors (see below), whose sum is σ = 8588695680. Its totient is φ = 1189815360.

The previous prime is 3931437967. The next prime is 3931438097. The reversal of 3931438038 is 8308341393.

It is a happy number.

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, 14098 + ... + 89786.

It is an arithmetic number, because the mean of its divisors is an integer number (268396740).

Almost surely, 2^3931438038 is an apocalyptic number.

3931438038 is an abundant number, since it is smaller than the sum of its proper divisors (4657257642).

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

3931438038 is a wasteful number, since it uses less digits than its factorization.

3931438038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76492.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 3931438038 is about 62701.1805152024. The cubic root of 3931438038 is about 1578.2791227330.

The spelling of 3931438038 in words is "three billion, nine hundred thirty-one million, four hundred thirty-eight thousand, thirty-eight".