17889339952 has 80 divisors (see below), whose sum is σ = 39954942720. Its totient is φ = 7673875200.

The previous prime is 17889339943. The next prime is 17889340031. The reversal of 17889339952 is 25993398871.

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 15 ways as a sum of consecutive naturals, for example, 869302 + ... + 889642.

It is an arithmetic number, because the mean of its divisors is an integer number (499436784).

Almost surely, 2^17889339952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17889339952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19977471360).

17889339952 is an abundant number, since it is smaller than the sum of its proper divisors (22065602768).

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

17889339952 is a wasteful number, since it uses less digits than its factorization.

17889339952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20642 (or 20636 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 64.

The spelling of 17889339952 in words is "seventeen billion, eight hundred eighty-nine million, three hundred thirty-nine thousand, nine hundred fifty-two".