18598554017 has 2 divisors, whose sum is σ = 18598554018. Its totient is φ = 18598554016.

The previous prime is 18598553899. The next prime is 18598554097. The reversal of 18598554017 is 71045589581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9342382336 + 9256171681 = 96656^2 + 96209^2 .

It is a cyclic number.

It is not a de Polignac number, because 18598554017 - 2⁸ = 18598553761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18598554017.

It is not a weakly prime, because it can be changed into another prime (18598554097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9299277008 + 9299277009.

It is an arithmetic number, because the mean of its divisors is an integer number (9299277009).

Almost surely, 2^18598554017 is an apocalyptic number.

It is an amenable number.

18598554017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18598554017 is an equidigital number, since it uses as much as digits as its factorization.

18598554017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016000, while the sum is 53.

The spelling of 18598554017 in words is "eighteen billion, five hundred ninety-eight million, five hundred fifty-four thousand, seventeen".