389932381902 has 64 divisors (see below), whose sum is σ = 904641177600. Its totient is φ = 109747672320.

The previous prime is 389932381901. The next prime is 389932381907. The reversal of 389932381902 is 209183239983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389932381901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 811627 + ... + 1199417.

It is an arithmetic number, because the mean of its divisors is an integer number (14135018400).

Almost surely, 2^389932381902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389932381902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452320588800).

389932381902 is an abundant number, since it is smaller than the sum of its proper divisors (514708795698).

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

389932381902 is a wasteful number, since it uses less digits than its factorization.

389932381902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388161.

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 389932381902 in words is "three hundred eighty-nine billion, nine hundred thirty-two million, three hundred eighty-one thousand, nine hundred two".