38203638408 has 72 divisors (see below), whose sum is σ = 112039552170. Its totient is φ = 11754961920.

The previous prime is 38203638367. The next prime is 38203638439. The reversal of 38203638408 is 80483630283.

38203638408 is a `hidden beast` number, since 3 + 8 + 2 + 0 + 3 + 638 + 4 + 0 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 16775948484 + 21427689924 = 129522^2 + 146382^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1557673 + ... + 1582008.

Almost surely, 2^38203638408 is an apocalyptic number.

It is an amenable number.

38203638408 is an abundant number, since it is smaller than the sum of its proper divisors (73835913762).

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

38203638408 is a wasteful number, since it uses less digits than its factorization.

38203638408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139719 (or 3139699 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 38203638408 in words is "thirty-eight billion, two hundred three million, six hundred thirty-eight thousand, four hundred eight".