18494812 has 12 divisors (see below), whose sum is σ = 36989680. Its totient is φ = 7926336.

The previous prime is 18494803. The next prime is 18494831. The reversal of 18494812 is 21849481.

18494812 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 330237 + ... + 330292.

Almost surely, 2^18494812 is an apocalyptic number.

It is an amenable number.

18494812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18494812 is a wasteful number, since it uses less digits than its factorization.

18494812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660540 (or 660538 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 18494812 is about 4300.5594984839. The cubic root of 18494812 is about 264.4538985287.

It can be divided in two parts, 18494 and 812, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 18494812 in words is "eighteen million, four hundred ninety-four thousand, eight hundred twelve".