389259218556 has 72 divisors (see below), whose sum is σ = 1059757249824. Its totient is φ = 119759955840.

The previous prime is 389259218533. The next prime is 389259218609. The reversal of 389259218556 is 655812952983.

389259218556 is a `hidden beast` number, since 3 + 8 + 9 + 2 + 59 + 21 + 8 + 556 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 389259218493 and 389259218502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5320866 + ... + 5393526.

It is an arithmetic number, because the mean of its divisors is an integer number (14718850692).

Almost surely, 2^389259218556 is an apocalyptic number.

389259218556 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

389259218556 is an abundant number, since it is smaller than the sum of its proper divisors (670498031268).

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

389259218556 is a wasteful number, since it uses less digits than its factorization.

389259218556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84131 (or 84126 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 63.

The spelling of 389259218556 in words is "three hundred eighty-nine billion, two hundred fifty-nine million, two hundred eighteen thousand, five hundred fifty-six".