18345868 has 12 divisors (see below), whose sum is σ = 33795160. Its totient is φ = 8690112.

The previous prime is 18345863. The next prime is 18345911. The reversal of 18345868 is 86854381.

It is not an unprimeable number, because it can be changed into a prime (18345863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120621 + ... + 120772.

Almost surely, 2^18345868 is an apocalyptic number.

It is an amenable number.

18345868 is a deficient number, since it is larger than the sum of its proper divisors (15449292).

18345868 is a wasteful number, since it uses less digits than its factorization.

18345868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241416 (or 241414 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 18345868 is about 4283.2076764967. The cubic root of 18345868 is about 263.7420766845.

The spelling of 18345868 in words is "eighteen million, three hundred forty-five thousand, eight hundred sixty-eight".