18972093319 has 2 divisors, whose sum is σ = 18972093320. Its totient is φ = 18972093318.

The previous prime is 18972093307. The next prime is 18972093353. The reversal of 18972093319 is 91339027981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18972093319 - 2²⁵ = 18938538887 is a prime.

It is a super-2 number, since 2×18972093319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18972093419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9486046659 + 9486046660.

It is an arithmetic number, because the mean of its divisors is an integer number (9486046660).

Almost surely, 2^18972093319 is an apocalyptic number.

18972093319 is a deficient number, since it is larger than the sum of its proper divisors (1).

18972093319 is an equidigital number, since it uses as much as digits as its factorization.

18972093319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 18972093319 in words is "eighteen billion, nine hundred seventy-two million, ninety-three thousand, three hundred nineteen".