18306874589 has 2 divisors, whose sum is σ = 18306874590. Its totient is φ = 18306874588.

The previous prime is 18306874583. The next prime is 18306874603. The reversal of 18306874589 is 98547860381.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9812487364 + 8494387225 = 99058^2 + 92165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18306874589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18306874583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9153437294 + 9153437295.

It is an arithmetic number, because the mean of its divisors is an integer number (9153437295).

Almost surely, 2^18306874589 is an apocalyptic number.

It is an amenable number.

18306874589 is a deficient number, since it is larger than the sum of its proper divisors (1).

18306874589 is an equidigital number, since it uses as much as digits as its factorization.

18306874589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 18306874589 in words is "eighteen billion, three hundred six million, eight hundred seventy-four thousand, five hundred eighty-nine".