389050013520 has 640 divisors, whose sum is σ = 1590528199680. Its totient is φ = 85558394880.

The previous prime is 389050013509. The next prime is 389050013533. The reversal of 389050013520 is 25310050983.

389050013520 is a `hidden beast` number, since 3 + 8 + 90 + 500 + 13 + 52 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 45249862 + ... + 45258458.

It is an arithmetic number, because the mean of its divisors is an integer number (2485200312).

Almost surely, 2^389050013520 is an apocalyptic number.

389050013520 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 389050013520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (795264099840).

389050013520 is an abundant number, since it is smaller than the sum of its proper divisors (1201478186160).

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

389050013520 is a wasteful number, since it uses less digits than its factorization.

389050013520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740 (or 8728 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 389050013520 in words is "three hundred eighty-nine billion, fifty million, thirteen thousand, five hundred twenty".