189000870 has 16 divisors (see below), whose sum is σ = 453602160. Its totient is φ = 50400224.

The previous prime is 189000817. The next prime is 189000871. The reversal of 189000870 is 78000981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189000871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3149985 + ... + 3150044.

It is an arithmetic number, because the mean of its divisors is an integer number (28350135).

Almost surely, 2^189000870 is an apocalyptic number.

189000870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189000870 is an abundant number, since it is smaller than the sum of its proper divisors (264601290).

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

189000870 is a wasteful number, since it uses less digits than its factorization.

189000870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6300039.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 189000870 is about 13747.7587264252. The cubic root of 189000870 is about 573.8802353860.

The spelling of 189000870 in words is "one hundred eighty-nine million, eight hundred seventy", and thus it is an aban number.