18086308 has 12 divisors (see below), whose sum is σ = 31743180. Its totient is φ = 9016832.

The previous prime is 18086279. The next prime is 18086357. The reversal of 18086308 is 80368081.

It can be written as a sum of positive squares in 2 ways, for example, as 6512704 + 11573604 = 2552^2 + 3402^2 .

It is a super-2 number, since 2×18086308² = 654229074141728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4993 + ... + 7816.

It is an arithmetic number, because the mean of its divisors is an integer number (2645265).

Almost surely, 2^18086308 is an apocalyptic number.

It is an amenable number.

18086308 is a deficient number, since it is larger than the sum of its proper divisors (13656872).

18086308 is a wasteful number, since it uses less digits than its factorization.

18086308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13166 (or 13164 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 18086308 is about 4252.8000188111. The cubic root of 18086308 is about 262.4923438432.

The spelling of 18086308 in words is "eighteen million, eighty-six thousand, three hundred eight".