17989783852 has 24 divisors (see below), whose sum is σ = 32095084896. Its totient is φ = 8819960448.

The previous prime is 17989783841. The next prime is 17989783853. The reversal of 17989783852 is 25838798971.

It is not an unprimeable number, because it can be changed into a prime (17989783853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347433 + ... + 395839.

It is an arithmetic number, because the mean of its divisors is an integer number (1337295204).

Almost surely, 2^17989783852 is an apocalyptic number.

It is an amenable number.

17989783852 is a deficient number, since it is larger than the sum of its proper divisors (14105301044).

17989783852 is a wasteful number, since it uses less digits than its factorization.

17989783852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50217 (or 50215 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 67.

The spelling of 17989783852 in words is "seventeen billion, nine hundred eighty-nine million, seven hundred eighty-three thousand, eight hundred fifty-two".