389291868000 has 432 divisors, whose sum is σ = 1607170953024. Its totient is φ = 88980595200.

The previous prime is 389291867989. The next prime is 389291868029. The reversal of 389291868000 is 868192983.

It is a happy number.

389291868000 is a `hidden beast` number, since 389 + 2 + 9 + 186 + 80 + 0 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1653657 + ... + 1874343.

It is an arithmetic number, because the mean of its divisors is an integer number (3720303132).

Almost surely, 2^389291868000 is an apocalyptic number.

389291868000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389291868000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803585476512).

389291868000 is an abundant number, since it is smaller than the sum of its proper divisors (1217879085024).

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

389291868000 is a wasteful number, since it uses less digits than its factorization.

389291868000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220732 (or 220704 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 389291868000 in words is "three hundred eighty-nine billion, two hundred ninety-one million, eight hundred sixty-eight thousand".