388165008638 has 96 divisors (see below), whose sum is σ = 679157498880. Its totient is φ = 165920040000.

The previous prime is 388165008631. The next prime is 388165008653. The reversal of 388165008638 is 836800561883.

It is a super-2 number, since 2×388165008638² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388165008631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110366456 + ... + 110369972.

It is an arithmetic number, because the mean of its divisors is an integer number (7074557280).

Almost surely, 2^388165008638 is an apocalyptic number.

388165008638 is a deficient number, since it is larger than the sum of its proper divisors (290992490242).

388165008638 is a wasteful number, since it uses less digits than its factorization.

388165008638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894 (or 3883 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 388165008638 in words is "three hundred eighty-eight billion, one hundred sixty-five million, eight thousand, six hundred thirty-eight".