18554812 has 12 divisors (see below), whose sum is σ = 32520040. Its totient is φ = 9263376.

The previous prime is 18554807. The next prime is 18554819. The reversal of 18554812 is 21845581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18554819) 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, 183 + ... + 6094.

Almost surely, 2^18554812 is an apocalyptic number.

It is an amenable number.

18554812 is a deficient number, since it is larger than the sum of its proper divisors (13965228).

18554812 is a wasteful number, since it uses less digits than its factorization.

18554812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7020 (or 7018 counting only the distinct ones).

The product of its digits is 12800, while the sum is 34.

The square root of 18554812 is about 4307.5296864909. The cubic root of 18554812 is about 264.7395661382.

The spelling of 18554812 in words is "eighteen million, five hundred fifty-four thousand, eight hundred twelve".