189705670 has 32 divisors (see below), whose sum is σ = 425730816. Its totient is φ = 59128800.

The previous prime is 189705667. The next prime is 189705689. The reversal of 189705670 is 76507981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122416 + ... + 123955.

It is an arithmetic number, because the mean of its divisors is an integer number (13304088).

Almost surely, 2^189705670 is an apocalyptic number.

189705670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189705670 is an abundant number, since it is smaller than the sum of its proper divisors (236025146).

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

189705670 is a wasteful number, since it uses less digits than its factorization.

189705670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246396.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 189705670 is about 13773.3681429054. The cubic root of 189705670 is about 574.5926995852.

The spelling of 189705670 in words is "one hundred eighty-nine million, seven hundred five thousand, six hundred seventy".