18626642 has 16 divisors (see below), whose sum is σ = 30162240. Its totient is φ = 8600592.

The previous prime is 18626627. The next prime is 18626653. The reversal of 18626642 is 24662681.

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, 5648 + ... + 8315.

It is an arithmetic number, because the mean of its divisors is an integer number (1885140).

Almost surely, 2^18626642 is an apocalyptic number.

18626642 is a deficient number, since it is larger than the sum of its proper divisors (11535598).

18626642 is a wasteful number, since it uses less digits than its factorization.

18626642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14017.

The product of its digits is 27648, while the sum is 35.

The square root of 18626642 is about 4315.8593582275. The cubic root of 18626642 is about 265.0807490957.

The spelling of 18626642 in words is "eighteen million, six hundred twenty-six thousand, six hundred forty-two".