188985 has 16 divisors (see below), whose sum is σ = 310464. Its totient is φ = 98112.

The previous prime is 188983. The next prime is 188999. The reversal of 188985 is 589881.

188985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 188985 - 2¹ = 188983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (188983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499 + ... + 791.

It is an arithmetic number, because the mean of its divisors is an integer number (19404).

2¹⁸⁸⁹⁸⁵ is an apocalyptic number.

188985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

188985 is a deficient number, since it is larger than the sum of its proper divisors (121479).

188985 is a wasteful number, since it uses less digits than its factorization.

188985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344.

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

The square root of 188985 is about 434.7240504044. The cubic root of 188985 is about 57.3864172437.

The spelling of 188985 in words is "one hundred eighty-eight thousand, nine hundred eighty-five".