18916088519 has 2 divisors, whose sum is σ = 18916088520. Its totient is φ = 18916088518.

The previous prime is 18916088491. The next prime is 18916088531. The reversal of 18916088519 is 91588061981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18916088519 is a prime.

It is a super-2 number, since 2×18916088519² (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 (18916088539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9458044259 + 9458044260.

It is an arithmetic number, because the mean of its divisors is an integer number (9458044260).

Almost surely, 2^18916088519 is an apocalyptic number.

18916088519 is a deficient number, since it is larger than the sum of its proper divisors (1).

18916088519 is an equidigital number, since it uses as much as digits as its factorization.

18916088519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 56.

The spelling of 18916088519 in words is "eighteen billion, nine hundred sixteen million, eighty-eight thousand, five hundred nineteen".