18392085 has 12 divisors (see below), whose sum is σ = 31879692. Its totient is φ = 9809088.

The previous prime is 18392081. The next prime is 18392107. The reversal of 18392085 is 58029381.

It can be written as a sum of positive squares in 2 ways, for example, as 2852721 + 15539364 = 1689^2 + 3942^2 .

It is not a de Polignac number, because 18392085 - 2² = 18392081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18392081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204312 + ... + 204401.

It is an arithmetic number, because the mean of its divisors is an integer number (2656641).

Almost surely, 2^18392085 is an apocalyptic number.

18392085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18392085 is a deficient number, since it is larger than the sum of its proper divisors (13487607).

18392085 is a wasteful number, since it uses less digits than its factorization.

18392085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408724 (or 408721 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 18392085 is about 4288.5994217227. The cubic root of 18392085 is about 263.9633644066.

The spelling of 18392085 in words is "eighteen million, three hundred ninety-two thousand, eighty-five".