18368659157 has 8 divisors (see below), whose sum is σ = 18929356992. Its totient is φ = 17813327200.

The previous prime is 18368659129. The next prime is 18368659193. The reversal of 18368659157 is 75195686381.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18368659157 - 2⁶ = 18368659093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18368659096 and 18368659105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368659457) 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, 1334519 + ... + 1348212.

It is an arithmetic number, because the mean of its divisors is an integer number (2366169624).

Almost surely, 2^18368659157 is an apocalyptic number.

It is an amenable number.

18368659157 is a deficient number, since it is larger than the sum of its proper divisors (560697835).

18368659157 is a wasteful number, since it uses less digits than its factorization.

18368659157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682939.

The product of its digits is 10886400, while the sum is 59.

The spelling of 18368659157 in words is "eighteen billion, three hundred sixty-eight million, six hundred fifty-nine thousand, one hundred fifty-seven".