18598553899 has 2 divisors, whose sum is σ = 18598553900. Its totient is φ = 18598553898.

The previous prime is 18598553879. The next prime is 18598554017. The reversal of 18598553899 is 99835589581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18598553899 - 2⁵ = 18598553867 is a prime.

It is not a weakly prime, because it can be changed into another prime (18598553839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9299276949 + 9299276950.

It is an arithmetic number, because the mean of its divisors is an integer number (9299276950).

Almost surely, 2^18598553899 is an apocalyptic number.

18598553899 is a deficient number, since it is larger than the sum of its proper divisors (1).

18598553899 is an equidigital number, since it uses as much as digits as its factorization.

18598553899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968000, while the sum is 70.

The spelling of 18598553899 in words is "eighteen billion, five hundred ninety-eight million, five hundred fifty-three thousand, eight hundred ninety-nine".