18086812 has 12 divisors (see below), whose sum is σ = 31865400. Its totient is φ = 8982416.

The previous prime is 18086771. The next prime is 18086837. The reversal of 18086812 is 21868081.

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, 14578 + ... + 15769.

It is an arithmetic number, because the mean of its divisors is an integer number (2655450).

Almost surely, 2^18086812 is an apocalyptic number.

It is an amenable number.

18086812 is a deficient number, since it is larger than the sum of its proper divisors (13778588).

18086812 is a wasteful number, since it uses less digits than its factorization.

18086812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30500 (or 30498 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 18086812 is about 4252.8592734771. The cubic root of 18086812 is about 262.4947820580.

The spelling of 18086812 in words is "eighteen million, eighty-six thousand, eight hundred twelve".