38508855638 has 32 divisors (see below), whose sum is σ = 64399449600. Its totient is φ = 17119827360.

The previous prime is 38508855631. The next prime is 38508855647. The reversal of 38508855638 is 83655880583.

38508855638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38508855631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1589645 + ... + 1613687.

It is an arithmetic number, because the mean of its divisors is an integer number (2012482800).

Almost surely, 2^38508855638 is an apocalyptic number.

38508855638 is a deficient number, since it is larger than the sum of its proper divisors (25890593962).

38508855638 is a wasteful number, since it uses less digits than its factorization.

38508855638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25652.

The product of its (nonzero) digits is 27648000, while the sum is 59.

The spelling of 38508855638 in words is "thirty-eight billion, five hundred eight million, eight hundred fifty-five thousand, six hundred thirty-eight".