18095990 has 32 divisors (see below), whose sum is σ = 37628064. Its totient is φ = 6192640.

The previous prime is 18095989. The next prime is 18096011. The reversal of 18095990 is 9959081.

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 15 ways as a sum of consecutive naturals, for example, 2969 + ... + 6708.

It is an arithmetic number, because the mean of its divisors is an integer number (1175877).

Almost surely, 2^18095990 is an apocalyptic number.

18095990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18095990 is an abundant number, since it is smaller than the sum of its proper divisors (19532074).

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

18095990 is a wasteful number, since it uses less digits than its factorization.

18095990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9712.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 18095990 is about 4253.9381753853. The cubic root of 18095990 is about 262.5391748034.

The spelling of 18095990 in words is "eighteen million, ninety-five thousand, nine hundred ninety".