18396725713 has 2 divisors, whose sum is σ = 18396725714. Its totient is φ = 18396725712.

The previous prime is 18396725701. The next prime is 18396725719. The reversal of 18396725713 is 31752769381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15847788544 + 2548937169 = 125888^2 + 50487^2 .

It is a cyclic number.

It is not a de Polignac number, because 18396725713 - 2⁵ = 18396725681 is a prime.

It is not a weakly prime, because it can be changed into another prime (18396725719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9198362856 + 9198362857.

It is an arithmetic number, because the mean of its divisors is an integer number (9198362857).

Almost surely, 2^18396725713 is an apocalyptic number.

It is an amenable number.

18396725713 is a deficient number, since it is larger than the sum of its proper divisors (1).

18396725713 is an equidigital number, since it uses as much as digits as its factorization.

18396725713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The spelling of 18396725713 in words is "eighteen billion, three hundred ninety-six million, seven hundred twenty-five thousand, seven hundred thirteen".