389657756982 has 32 divisors (see below), whose sum is σ = 839287088640. Its totient is φ = 119891233440.

The previous prime is 389657756951. The next prime is 389657756987. The reversal of 389657756982 is 289657756983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389657756987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4468257 + ... + 4554627.

It is an arithmetic number, because the mean of its divisors is an integer number (26227721520).

Almost surely, 2^389657756982 is an apocalyptic number.

389657756982 is an abundant number, since it is smaller than the sum of its proper divisors (449629331658).

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

389657756982 is a wasteful number, since it uses less digits than its factorization.

389657756982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144228.

The product of its digits is 1371686400, while the sum is 75.

Subtracting from 389657756982 its reverse (289657756983), we obtain a palindrome (99999999999).

The spelling of 389657756982 in words is "three hundred eighty-nine billion, six hundred fifty-seven million, seven hundred fifty-six thousand, nine hundred eighty-two".