18085854 has 16 divisors (see below), whose sum is σ = 36241920. Its totient is φ = 6016920.

The previous prime is 18085831. The next prime is 18085867. The reversal of 18085854 is 45858081.

It is a super-2 number, since 2×18085854² = 654196229818632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787 + ... + 6065.

It is an arithmetic number, because the mean of its divisors is an integer number (2265120).

Almost surely, 2^18085854 is an apocalyptic number.

18085854 is an abundant number, since it is smaller than the sum of its proper divisors (18156066).

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

18085854 is a wasteful number, since it uses less digits than its factorization.

18085854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855.

The product of its (nonzero) digits is 51200, while the sum is 39.

The square root of 18085854 is about 4252.7466418775. The cubic root of 18085854 is about 262.4901474760.

The spelling of 18085854 in words is "eighteen million, eighty-five thousand, eight hundred fifty-four".