18098589959 has 2 divisors, whose sum is σ = 18098589960. Its totient is φ = 18098589958.

The previous prime is 18098589941. The next prime is 18098589967. The reversal of 18098589959 is 95998589081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18098589959 - 2²⁰ = 18097541383 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 18098589892 and 18098589901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18098589919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9049294979 + 9049294980.

It is an arithmetic number, because the mean of its divisors is an integer number (9049294980).

Almost surely, 2^18098589959 is an apocalyptic number.

18098589959 is a deficient number, since it is larger than the sum of its proper divisors (1).

18098589959 is an equidigital number, since it uses as much as digits as its factorization.

18098589959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83980800, while the sum is 71.

The spelling of 18098589959 in words is "eighteen billion, ninety-eight million, five hundred eighty-nine thousand, nine hundred fifty-nine".