18859304312163 has 24 divisors (see below), whose sum is σ = 31136365398528. Its totient is φ = 10775518004592.

The previous prime is 18859304312141. The next prime is 18859304312231. The reversal of 18859304312163 is 36121340395881.

It is a happy number.

18859304312163 is a `hidden beast` number, since 1 + 8 + 8 + 5 + 9 + 304 + 312 + 16 + 3 = 666.

It is not a de Polignac number, because 18859304312163 - 2⁹ = 18859304311651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18859304312263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16488345 + ... + 17595002.

It is an arithmetic number, because the mean of its divisors is an integer number (1297348558272).

Almost surely, 2^{18859304312163} is an apocalyptic number.

18859304312163 is a deficient number, since it is larger than the sum of its proper divisors (12277061086365).

18859304312163 is a wasteful number, since it uses less digits than its factorization.

18859304312163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34092143 (or 34092140 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 18859304312163 in words is "eighteen trillion, eight hundred fifty-nine billion, three hundred four million, three hundred twelve thousand, one hundred sixty-three".