18464194031 has 2 divisors, whose sum is σ = 18464194032. Its totient is φ = 18464194030.

The previous prime is 18464193983. The next prime is 18464194039. The reversal of 18464194031 is 13049146481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18464194031 - 2¹⁸ = 18463931887 is a prime.

It is a super-2 number, since 2×18464194031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18464194031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18464194039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9232097015 + 9232097016.

It is an arithmetic number, because the mean of its divisors is an integer number (9232097016).

Almost surely, 2^18464194031 is an apocalyptic number.

18464194031 is a deficient number, since it is larger than the sum of its proper divisors (1).

18464194031 is an equidigital number, since it uses as much as digits as its factorization.

18464194031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 18464194031 in words is "eighteen billion, four hundred sixty-four million, one hundred ninety-four thousand, thirty-one".