389994968160 has 768 divisors, whose sum is σ = 1686991380480. Its totient is φ = 82107924480.

The previous prime is 389994968147. The next prime is 389994968243. The reversal of 389994968160 is 61869499983.

389994968160 is a `hidden beast` number, since 38 + 9 + 99 + 496 + 8 + 16 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24153690 + ... + 24169830.

It is an arithmetic number, because the mean of its divisors is an integer number (2196603360).

Almost surely, 2^389994968160 is an apocalyptic number.

389994968160 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 389994968160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843495690240).

389994968160 is an abundant number, since it is smaller than the sum of its proper divisors (1296996412320).

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

389994968160 is a wasteful number, since it uses less digits than its factorization.

389994968160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16236 (or 16222 counting only the distinct ones).

The product of its (nonzero) digits is 181398528, while the sum is 72.

The spelling of 389994968160 in words is "three hundred eighty-nine billion, nine hundred ninety-four million, nine hundred sixty-eight thousand, one hundred sixty".