189085 has 8 divisors (see below), whose sum is σ = 244440. Its totient is φ = 139584.

The previous prime is 189067. The next prime is 189127. The reversal of 189085 is 580981.

It can be written as a sum of positive squares in 4 ways, for example, as 20164 + 168921 = 142^2 + 411^2 .

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 189085 - 2⁷ = 188957 is a prime.

189085 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390 + ... + 1519.

It is an arithmetic number, because the mean of its divisors is an integer number (30555).

2¹⁸⁹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

189085 is a deficient number, since it is larger than the sum of its proper divisors (55355).

189085 is a wasteful number, since it uses less digits than its factorization.

189085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2927.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 189085 is about 434.8390506843. The cubic root of 189085 is about 57.3965373234.

The spelling of 189085 in words is "one hundred eighty-nine thousand, eighty-five".