18031257093 has 32 divisors (see below), whose sum is σ = 24734476800. Its totient is φ = 11679754176.

The previous prime is 18031257073. The next prime is 18031257113. The reversal of 18031257093 is 39075213081.

It is an interprime number because it is at equal distance from previous prime (18031257073) and next prime (18031257113).

It is not a de Polignac number, because 18031257093 - 2⁵ = 18031257061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18031257053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10089346 + ... + 10091132.

It is an arithmetic number, because the mean of its divisors is an integer number (772952400).

Almost surely, 2^18031257093 is an apocalyptic number.

It is an amenable number.

18031257093 is a deficient number, since it is larger than the sum of its proper divisors (6703219707).

18031257093 is a wasteful number, since it uses less digits than its factorization.

18031257093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 18031257093 in words is "eighteen billion, thirty-one million, two hundred fifty-seven thousand, ninety-three".