18765976319 has 2 divisors, whose sum is σ = 18765976320. Its totient is φ = 18765976318.

The previous prime is 18765976309. The next prime is 18765976321. The reversal of 18765976319 is 91367956781.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18765976319 is a prime.

It is a super-2 number, since 2×18765976319² (a number of 21 digits) contains 22 as substring.

Together with 18765976321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18765976309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9382988159 + 9382988160.

It is an arithmetic number, because the mean of its divisors is an integer number (9382988160).

Almost surely, 2^18765976319 is an apocalyptic number.

18765976319 is a deficient number, since it is larger than the sum of its proper divisors (1).

18765976319 is an equidigital number, since it uses as much as digits as its factorization.

18765976319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 62.

The spelling of 18765976319 in words is "eighteen billion, seven hundred sixty-five million, nine hundred seventy-six thousand, three hundred nineteen".