18966118319 has 2 divisors, whose sum is σ = 18966118320. Its totient is φ = 18966118318.

The previous prime is 18966118271. The next prime is 18966118333. The reversal of 18966118319 is 91381166981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18966118319 is a prime.

It is a super-2 number, since 2×18966118319² (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 (18966118019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9483059159 + 9483059160.

It is an arithmetic number, because the mean of its divisors is an integer number (9483059160).

Almost surely, 2^18966118319 is an apocalyptic number.

18966118319 is a deficient number, since it is larger than the sum of its proper divisors (1).

18966118319 is an equidigital number, since it uses as much as digits as its factorization.

18966118319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 53.

The spelling of 18966118319 in words is "eighteen billion, nine hundred sixty-six million, one hundred eighteen thousand, three hundred nineteen".