18085856 has 12 divisors (see below), whose sum is σ = 35606592. Its totient is φ = 9042912.

The previous prime is 18085831. The next prime is 18085867. The reversal of 18085856 is 65858081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282560 + ... + 282623.

It is an arithmetic number, because the mean of its divisors is an integer number (2967216).

Almost surely, 2^18085856 is an apocalyptic number.

18085856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18085856 is a deficient number, since it is larger than the sum of its proper divisors (17520736).

18085856 is an equidigital number, since it uses as much as digits as its factorization.

18085856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565193 (or 565185 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 18085856 is about 4252.7468770196. The cubic root of 18085856 is about 262.4901571517.

The spelling of 18085856 in words is "eighteen million, eighty-five thousand, eight hundred fifty-six".