189000856 has 16 divisors (see below), whose sum is σ = 386592840. Its totient is φ = 85909440.

The previous prime is 189000817. The next prime is 189000871. The reversal of 189000856 is 658000981.

189000856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073781 + ... + 1073956.

Almost surely, 2^189000856 is an apocalyptic number.

It is an amenable number.

189000856 is an abundant number, since it is smaller than the sum of its proper divisors (197591984).

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

189000856 is a wasteful number, since it uses less digits than its factorization.

189000856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147754 (or 2147750 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 189000856 is about 13747.7582172513. The cubic root of 189000856 is about 573.8802212162.

The spelling of 189000856 in words is "one hundred eighty-nine million, eight hundred fifty-six", and thus it is an aban number.