18307336319 has 2 divisors, whose sum is σ = 18307336320. Its totient is φ = 18307336318.

The previous prime is 18307336283. The next prime is 18307336343. The reversal of 18307336319 is 91363370381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18307336319 - 2²⁴ = 18290559103 is a prime.

It is a super-2 number, since 2×18307336319² (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 18307336319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18307332319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9153668159 + 9153668160.

It is an arithmetic number, because the mean of its divisors is an integer number (9153668160).

Almost surely, 2^18307336319 is an apocalyptic number.

18307336319 is a deficient number, since it is larger than the sum of its proper divisors (1).

18307336319 is an equidigital number, since it uses as much as digits as its factorization.

18307336319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The spelling of 18307336319 in words is "eighteen billion, three hundred seven million, three hundred thirty-six thousand, three hundred nineteen".