18164310023 has 4 divisors (see below), whose sum is σ = 19120326360. Its totient is φ = 17208293688.

The previous prime is 18164310013. The next prime is 18164310041. The reversal of 18164310023 is 32001346181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18164310023 - 2²² = 18160115719 is a prime.

It is a super-2 number, since 2×18164310023² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18164310013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478008140 + ... + 478008177.

It is an arithmetic number, because the mean of its divisors is an integer number (4780081590).

Almost surely, 2^18164310023 is an apocalyptic number.

18164310023 is a deficient number, since it is larger than the sum of its proper divisors (956016337).

18164310023 is an equidigital number, since it uses as much as digits as its factorization.

18164310023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956016336.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 18164310023 in words is "eighteen billion, one hundred sixty-four million, three hundred ten thousand, twenty-three".