389611261128 has 32 divisors (see below), whose sum is σ = 974060811360. Its totient is φ = 129866065920.

The previous prime is 389611261111. The next prime is 389611261153. The reversal of 389611261128 is 821162116983.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503688 + ... + 1016328.

It is an arithmetic number, because the mean of its divisors is an integer number (30439400355).

Almost surely, 2^389611261128 is an apocalyptic number.

It is an amenable number.

389611261128 is an abundant number, since it is smaller than the sum of its proper divisors (584449550232).

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

389611261128 is a wasteful number, since it uses less digits than its factorization.

389611261128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544317 (or 544313 counting only the distinct ones).

The product of its digits is 248832, while the sum is 48.

The spelling of 389611261128 in words is "three hundred eighty-nine billion, six hundred eleven million, two hundred sixty-one thousand, one hundred twenty-eight".