389024325820 has 72 divisors (see below), whose sum is σ = 888962606784. Its totient is φ = 142158034944.

The previous prime is 389024325787. The next prime is 389024325821. The reversal of 389024325820 is 28523420983.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389024325821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2366829 + ... + 2525851.

It is an arithmetic number, because the mean of its divisors is an integer number (12346702872).

Almost surely, 2^389024325820 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 389024325820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444481303392).

389024325820 is an abundant number, since it is smaller than the sum of its proper divisors (499938280964).

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

389024325820 is a wasteful number, since it uses less digits than its factorization.

389024325820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159239 (or 159140 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 389024325820 in words is "three hundred eighty-nine billion, twenty-four million, three hundred twenty-five thousand, eight hundred twenty".