18368351163 has 12 divisors (see below), whose sum is σ = 26794757808. Its totient is φ = 12124323600.

The previous prime is 18368351123. The next prime is 18368351179. The reversal of 18368351163 is 36115386381.

18368351163 is a `hidden beast` number, since 1 + 83 + 68 + 351 + 163 = 666.

It is not a de Polignac number, because 18368351163 - 2⁸ = 18368350907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18368351123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10102695 + ... + 10104512.

It is an arithmetic number, because the mean of its divisors is an integer number (2232896484).

Almost surely, 2^18368351163 is an apocalyptic number.

18368351163 is a deficient number, since it is larger than the sum of its proper divisors (8426406645).

18368351163 is a wasteful number, since it uses less digits than its factorization.

18368351163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20207314 (or 20207311 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 18368351163 in words is "eighteen billion, three hundred sixty-eight million, three hundred fifty-one thousand, one hundred sixty-three".