18411668 has 12 divisors (see below), whose sum is σ = 35149632. Its totient is φ = 8368920.

The previous prime is 18411647. The next prime is 18411671. The reversal of 18411668 is 86611481.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209180 + ... + 209267.

It is an arithmetic number, because the mean of its divisors is an integer number (2929136).

Almost surely, 2^18411668 is an apocalyptic number.

It is an amenable number.

18411668 is a deficient number, since it is larger than the sum of its proper divisors (16737964).

18411668 is a wasteful number, since it uses less digits than its factorization.

18411668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418462 (or 418460 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 18411668 is about 4290.8819606230. The cubic root of 18411668 is about 264.0570163048.

The spelling of 18411668 in words is "eighteen million, four hundred eleven thousand, six hundred sixty-eight".