18396724713 has 8 divisors (see below), whose sum is σ = 24531360000. Its totient is φ = 12263286288.

The previous prime is 18396724669. The next prime is 18396724741. The reversal of 18396724713 is 31742769381.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18396724713 - 2⁹ = 18396724201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18396725713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262713 + ... + 325286.

It is an arithmetic number, because the mean of its divisors is an integer number (3066420000).

Almost surely, 2^18396724713 is an apocalyptic number.

It is an amenable number.

18396724713 is a deficient number, since it is larger than the sum of its proper divisors (6134635287).

18396724713 is a wasteful number, since it uses less digits than its factorization.

18396724713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598431.

The product of its digits is 1524096, while the sum is 51.

The spelling of 18396724713 in words is "eighteen billion, three hundred ninety-six million, seven hundred twenty-four thousand, seven hundred thirteen".