18718350357 has 32 divisors (see below), whose sum is σ = 29326374144. Its totient is φ = 10395648000.

The previous prime is 18718350341. The next prime is 18718350359. The reversal of 18718350357 is 75305381781.

It is not a de Polignac number, because 18718350357 - 2⁴ = 18718350341 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18718350359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 718357 + ... + 743957.

It is an arithmetic number, because the mean of its divisors is an integer number (916449192).

Almost surely, 2^18718350357 is an apocalyptic number.

It is an amenable number.

18718350357 is a deficient number, since it is larger than the sum of its proper divisors (10608023787).

18718350357 is a wasteful number, since it uses less digits than its factorization.

18718350357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26589.

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 18718350357 in words is "eighteen billion, seven hundred eighteen million, three hundred fifty thousand, three hundred fifty-seven".