18031098 has 32 divisors (see below), whose sum is σ = 37584000. Its totient is φ = 5759936.

The previous prime is 18031063. The next prime is 18031109. The reversal of 18031098 is 89013081.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29803 + ... + 30401.

It is an arithmetic number, because the mean of its divisors is an integer number (1174500).

Almost surely, 2^18031098 is an apocalyptic number.

18031098 is an abundant number, since it is smaller than the sum of its proper divisors (19552902).

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

18031098 is a wasteful number, since it uses less digits than its factorization.

18031098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 18031098 is about 4246.3040399858. The cubic root of 18031098 is about 262.2249781728.

The spelling of 18031098 in words is "eighteen million, thirty-one thousand, ninety-eight".