3138188965638 has 64 divisors (see below), whose sum is σ = 6581079055872. Its totient is φ = 995725336320.

The previous prime is 3138188965619. The next prime is 3138188965651. The reversal of 3138188965638 is 8365698818313.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73312770 + ... + 73355562.

It is an arithmetic number, because the mean of its divisors is an integer number (102829360248).

Almost surely, 2^{3138188965638} is an apocalyptic number.

3138188965638 is an abundant number, since it is smaller than the sum of its proper divisors (3442890090234).

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

3138188965638 is a wasteful number, since it uses less digits than its factorization.

3138188965638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45389.

The product of its digits is 179159040, while the sum is 69.

The spelling of 3138188965638 in words is "three trillion, one hundred thirty-eight billion, one hundred eighty-eight million, nine hundred sixty-five thousand, six hundred thirty-eight".