18306486 has 40 divisors (see below), whose sum is σ = 44753544. Its totient is φ = 5546880.

The previous prime is 18306473. The next prime is 18306493. The reversal of 18306486 is 68460381.

It is a happy number.

18306486 is a `hidden beast` number, since 1 + 8 + 3 + 0 + 648 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18306486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3355 + ... + 6918.

Almost surely, 2^18306486 is an apocalyptic number.

18306486 is an abundant number, since it is smaller than the sum of its proper divisors (26447058).

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

18306486 is a wasteful number, since it uses less digits than its factorization.

18306486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10298 (or 10289 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 18306486 is about 4278.6079511916. The cubic root of 18306486 is about 263.5532215972.

The spelling of 18306486 in words is "eighteen million, three hundred six thousand, four hundred eighty-six".