39297816138 has 32 divisors (see below), whose sum is σ = 90418452480. Its totient is φ = 11153588400.

The previous prime is 39297816133. The next prime is 39297816157. The reversal of 39297816138 is 83161879293.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (39297816133) 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, 3091878 + ... + 3104561.

It is an arithmetic number, because the mean of its divisors is an integer number (2825576640).

Almost surely, 2^39297816138 is an apocalyptic number.

39297816138 is an abundant number, since it is smaller than the sum of its proper divisors (51120636342).

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

39297816138 is a wasteful number, since it uses less digits than its factorization.

39297816138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6196602.

The product of its digits is 3919104, while the sum is 57.

The spelling of 39297816138 in words is "thirty-nine billion, two hundred ninety-seven million, eight hundred sixteen thousand, one hundred thirty-eight".