18086085 has 20 divisors (see below), whose sum is σ = 32421708. Its totient is φ = 9645696.

The previous prime is 18086071. The next prime is 18086093. The reversal of 18086085 is 58068081.

It can be written as a sum of positive squares in 2 ways, for example, as 7935489 + 10150596 = 2817^2 + 3186^2 .

It is not a de Polignac number, because 18086085 - 2⁴ = 18086069 is a prime.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 21924 + ... + 22733.

Almost surely, 2^18086085 is an apocalyptic number.

18086085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18086085 is a deficient number, since it is larger than the sum of its proper divisors (14335623).

18086085 is an equidigital number, since it uses as much as digits as its factorization.

18086085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44674 (or 44665 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 18086085 is about 4252.7738007094. The cubic root of 18086085 is about 262.4912650155.

The spelling of 18086085 in words is "eighteen million, eighty-six thousand, eighty-five".