389231682 has 64 divisors (see below), whose sum is σ = 954270720. Its totient is φ = 103356864.

The previous prime is 389231671. The next prime is 389231683. The reversal of 389231682 is 286132983.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (389231683) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 37693 + ... + 46895.

It is an arithmetic number, because the mean of its divisors is an integer number (14910480).

Almost surely, 2^389231682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389231682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477135360).

389231682 is an abundant number, since it is smaller than the sum of its proper divisors (565039038).

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

389231682 is a wasteful number, since it uses less digits than its factorization.

389231682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9287.

The product of its digits is 124416, while the sum is 42.

The square root of 389231682 is about 19728.9554209036. The cubic root of 389231682 is about 730.1342606623.

The spelling of 389231682 in words is "three hundred eighty-nine million, two hundred thirty-one thousand, six hundred eighty-two".