189888546660 has 24 divisors (see below), whose sum is σ = 531687930816. Its totient is φ = 50636945760.

The previous prime is 189888546607. The next prime is 189888546677. The reversal of 189888546660 is 66645888981.

It is a happy number.

189888546660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 1582404496 + ... + 1582404615.

It is an arithmetic number, because the mean of its divisors is an integer number (22153663784).

Almost surely, 2^189888546660 is an apocalyptic number.

189888546660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189888546660 is an abundant number, since it is smaller than the sum of its proper divisors (341799384156).

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

189888546660 is a wasteful number, since it uses less digits than its factorization.

189888546660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164809123 (or 3164809121 counting only the distinct ones).

The product of its (nonzero) digits is 159252480, while the sum is 69.

The spelling of 189888546660 in words is "one hundred eighty-nine billion, eight hundred eighty-eight million, five hundred forty-six thousand, six hundred sixty".