389198309682 has 96 divisors (see below), whose sum is σ = 963757992960. Its totient is φ = 102595896000.

The previous prime is 389198309681. The next prime is 389198309719. The reversal of 389198309682 is 286903891983.

It is a super-2 number, since 2×389198309682² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389198309681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15965419 + ... + 15989777.

It is an arithmetic number, because the mean of its divisors is an integer number (10039145760).

Almost surely, 2^389198309682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389198309682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481878996480).

389198309682 is an abundant number, since it is smaller than the sum of its proper divisors (574559683278).

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

389198309682 is a wasteful number, since it uses less digits than its factorization.

389198309682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26648 (or 26635 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 66.

The spelling of 389198309682 in words is "three hundred eighty-nine billion, one hundred ninety-eight million, three hundred nine thousand, six hundred eighty-two".