13889318 has 16 divisors (see below), whose sum is σ = 21774960. Its totient is φ = 6636000.

The previous prime is 13889279. The next prime is 13889321. The reversal of 13889318 is 81398831.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 4673 + ... + 7043.

It is an arithmetic number, because the mean of its divisors is an integer number (1360935).

Almost surely, 2^13889318 is an apocalyptic number.

13889318 is a deficient number, since it is larger than the sum of its proper divisors (7885642).

13889318 is a wasteful number, since it uses less digits than its factorization.

13889318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503.

The product of its digits is 41472, while the sum is 41.

The square root of 13889318 is about 3726.8375333518. The cubic root of 13889318 is about 240.3774039003.

The spelling of 13889318 in words is "thirteen million, eight hundred eighty-nine thousand, three hundred eighteen".