18364831 has 2 divisors, whose sum is σ = 18364832. Its totient is φ = 18364830.

The previous prime is 18364817. The next prime is 18364891. The reversal of 18364831 is 13846381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18364831 - 2⁵ = 18364799 is a prime.

It is a super-2 number, since 2×18364831² = 674534035317122, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 18364831 parts by 6060 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18364891) by changing a digit.

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 as a sum of consecutive naturals, namely, 9182415 + 9182416.

It is an arithmetic number, because the mean of its divisors is an integer number (9182416).

Almost surely, 2^18364831 is an apocalyptic number.

18364831 is a deficient number, since it is larger than the sum of its proper divisors (1).

18364831 is an equidigital number, since it uses as much as digits as its factorization.

18364831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 18364831 is about 4285.4207494714. The cubic root of 18364831 is about 263.8329167362.

The spelling of 18364831 in words is "eighteen million, three hundred sixty-four thousand, eight hundred thirty-one".