18988799719 has 2 divisors, whose sum is σ = 18988799720. Its totient is φ = 18988799718.

The previous prime is 18988799657. The next prime is 18988799743. The reversal of 18988799719 is 91799788981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18988799719 - 2¹¹ = 18988797671 is a prime.

It is a super-2 number, since 2×18988799719² (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 (18988794719) 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, 9494399859 + 9494399860.

It is an arithmetic number, because the mean of its divisors is an integer number (9494399860).

Almost surely, 2^18988799719 is an apocalyptic number.

18988799719 is a deficient number, since it is larger than the sum of its proper divisors (1).

18988799719 is an equidigital number, since it uses as much as digits as its factorization.

18988799719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164602368, while the sum is 76.

The spelling of 18988799719 in words is "eighteen billion, nine hundred eighty-eight million, seven hundred ninety-nine thousand, seven hundred nineteen".