389216644992 has 512 divisors, whose sum is σ = 1340426880000. Its totient is φ = 108883353600.

The previous prime is 389216644991. The next prime is 389216645003. The reversal of 389216644992 is 299446612983.

389216644992 is a `hidden beast` number, since 3 + 8 + 92 + 16 + 6 + 449 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389216644991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 555230242 + ... + 555230942.

It is an arithmetic number, because the mean of its divisors is an integer number (2618021250).

Almost surely, 2^389216644992 is an apocalyptic number.

389216644992 is a gapful number since it is divisible by the number (32) 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 389216644992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (670213440000).

389216644992 is an abundant number, since it is smaller than the sum of its proper divisors (951210235008).

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

389216644992 is a wasteful number, since it uses less digits than its factorization.

389216644992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1161 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 63.

The spelling of 389216644992 in words is "three hundred eighty-nine billion, two hundred sixteen million, six hundred forty-four thousand, nine hundred ninety-two".