189715 has 8 divisors (see below), whose sum is σ = 239760. Its totient is φ = 143712.

The previous prime is 189713. The next prime is 189733. The reversal of 189715 is 517981.

189715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189715 - 2¹ = 189713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189713) 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, 904 + ... + 1093.

It is an arithmetic number, because the mean of its divisors is an integer number (29970).

2¹⁸⁹⁷¹⁵ is an apocalyptic number.

189715 is a deficient number, since it is larger than the sum of its proper divisors (50045).

189715 is a wasteful number, since it uses less digits than its factorization.

189715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021.

The product of its digits is 2520, while the sum is 31.

The square root of 189715 is about 435.5628542472. The cubic root of 189715 is about 57.4602119198.

The spelling of 189715 in words is "one hundred eighty-nine thousand, seven hundred fifteen".