18718604759 has 2 divisors, whose sum is σ = 18718604760. Its totient is φ = 18718604758.

The previous prime is 18718604747. The next prime is 18718604767. The reversal of 18718604759 is 95740681781.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18718604759 - 2⁴ = 18718604743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18718604059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9359302379 + 9359302380.

It is an arithmetic number, because the mean of its divisors is an integer number (9359302380).

Almost surely, 2^18718604759 is an apocalyptic number.

18718604759 is a deficient number, since it is larger than the sum of its proper divisors (1).

18718604759 is an equidigital number, since it uses as much as digits as its factorization.

18718604759 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 18718604759 in words is "eighteen billion, seven hundred eighteen million, six hundred four thousand, seven hundred fifty-nine".