189885 has 8 divisors (see below), whose sum is σ = 303840. Its totient is φ = 101264.

The previous prime is 189881. The next prime is 189887. The reversal of 189885 is 588981.

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 189885 - 2² = 189881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189881) 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, 6315 + ... + 6344.

It is an arithmetic number, because the mean of its divisors is an integer number (37980).

2¹⁸⁹⁸⁸⁵ is an apocalyptic number.

189885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189885 is a deficient number, since it is larger than the sum of its proper divisors (113955).

189885 is a wasteful number, since it uses less digits than its factorization.

189885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12667.

The product of its digits is 23040, while the sum is 39.

The square root of 189885 is about 435.7579603404. The cubic root of 189885 is about 57.4773697966.

The spelling of 189885 in words is "one hundred eighty-nine thousand, eight hundred eighty-five".