18734474859163 has 16 divisors (see below), whose sum is σ = 22861309211136. Its totient is φ = 15002734158720.

The previous prime is 18734474859157. The next prime is 18734474859167. The reversal of 18734474859163 is 36195847443781.

It is not a de Polignac number, because 18734474859163 - 2⁵ = 18734474859131 is a prime.

It is a super-2 number, since 2×18734474859163² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18734474859092 and 18734474859101.

It is not an unprimeable number, because it can be changed into a prime (18734474859167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1353053518 + ... + 1353067363.

It is an arithmetic number, because the mean of its divisors is an integer number (1428831825696).

Almost surely, 2^{18734474859163} is an apocalyptic number.

18734474859163 is a deficient number, since it is larger than the sum of its proper divisors (4126834351973).

18734474859163 is a wasteful number, since it uses less digits than its factorization.

18734474859163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706120954.

The product of its digits is 487710720, while the sum is 70.

The spelling of 18734474859163 in words is "eighteen trillion, seven hundred thirty-four billion, four hundred seventy-four million, eight hundred fifty-nine thousand, one hundred sixty-three".