38693862138 has 32 divisors (see below), whose sum is σ = 78478307136. Its totient is φ = 12716327808.

The previous prime is 38693862127. The next prime is 38693862143. The reversal of 38693862138 is 83126839683.

38693862138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 1211956 + ... + 1243472.

It is an arithmetic number, because the mean of its divisors is an integer number (2452447098).

Almost surely, 2^38693862138 is an apocalyptic number.

38693862138 is an abundant number, since it is smaller than the sum of its proper divisors (39784444998).

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

38693862138 is a wasteful number, since it uses less digits than its factorization.

38693862138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34398.

The product of its digits is 8957952, while the sum is 57.

The spelling of 38693862138 in words is "thirty-eight billion, six hundred ninety-three million, eight hundred sixty-two thousand, one hundred thirty-eight".