13915138 has 16 divisors (see below), whose sum is σ = 21865536. Its totient is φ = 6629040.

The previous prime is 13915127. The next prime is 13915141. The reversal of 13915138 is 83151931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16753 + ... + 17563.

It is an arithmetic number, because the mean of its divisors is an integer number (1366596).

Almost surely, 2^13915138 is an apocalyptic number.

13915138 is a deficient number, since it is larger than the sum of its proper divisors (7950398).

13915138 is a wasteful number, since it uses less digits than its factorization.

13915138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209.

The product of its digits is 3240, while the sum is 31.

The square root of 13915138 is about 3730.2999879366. The cubic root of 13915138 is about 240.5262641631.

The spelling of 13915138 in words is "thirteen million, nine hundred fifteen thousand, one hundred thirty-eight".