17989165218 has 16 divisors (see below), whose sum is σ = 37218962880. Its totient is φ = 5789616336.

The previous prime is 17989165171. The next prime is 17989165241. The reversal of 17989165218 is 81256198971.

It is a super-2 number, since 2×17989165218² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51692830 + ... + 51693177.

It is an arithmetic number, because the mean of its divisors is an integer number (2326185180).

Almost surely, 2^17989165218 is an apocalyptic number.

17989165218 is an abundant number, since it is smaller than the sum of its proper divisors (19229797662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17989165218 is a wasteful number, since it uses less digits than its factorization.

17989165218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103386041.

The product of its digits is 2177280, while the sum is 57.

The spelling of 17989165218 in words is "seventeen billion, nine hundred eighty-nine million, one hundred sixty-five thousand, two hundred eighteen".