13816971938 has 64 divisors (see below), whose sum is σ = 26656300800. Its totient is φ = 5214378240.

The previous prime is 13816971923. The next prime is 13816971943. The reversal of 13816971938 is 83917961831.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1299548 + ... + 1310136.

It is an arithmetic number, because the mean of its divisors is an integer number (416504700).

Almost surely, 2^13816971938 is an apocalyptic number.

13816971938 is a deficient number, since it is larger than the sum of its proper divisors (12839328862).

13816971938 is a wasteful number, since it uses less digits than its factorization.

13816971938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10875.

The product of its digits is 1959552, while the sum is 56.

The spelling of 13816971938 in words is "thirteen billion, eight hundred sixteen million, nine hundred seventy-one thousand, nine hundred thirty-eight".