13888166 has 4 divisors (see below), whose sum is σ = 20832252. Its totient is φ = 6944082.

The previous prime is 13888153. The next prime is 13888181. The reversal of 13888166 is 66188831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3472040 + ... + 3472043.

It is an arithmetic number, because the mean of its divisors is an integer number (5208063).

Almost surely, 2^13888166 is an apocalyptic number.

13888166 is a deficient number, since it is larger than the sum of its proper divisors (6944086).

13888166 is an equidigital number, since it uses as much as digits as its factorization.

13888166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6944085.

The product of its digits is 55296, while the sum is 41.

The square root of 13888166 is about 3726.6829755159. The cubic root of 13888166 is about 240.3707579675.

The spelling of 13888166 in words is "thirteen million, eight hundred eighty-eight thousand, one hundred sixty-six".