17989744120 has 32 divisors (see below), whose sum is σ = 40989297600. Its totient is φ = 7104809088.

The previous prime is 17989744109. The next prime is 17989744139. The reversal of 17989744120 is 2144798971.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2843319 + ... + 2849638.

It is an arithmetic number, because the mean of its divisors is an integer number (1280915550).

Almost surely, 2^17989744120 is an apocalyptic number.

17989744120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17989744120 is an abundant number, since it is smaller than the sum of its proper divisors (22999553480).

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

17989744120 is a wasteful number, since it uses less digits than its factorization.

17989744120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693047 (or 5693043 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 17989744120 in words is "seventeen billion, nine hundred eighty-nine million, seven hundred forty-four thousand, one hundred twenty".