187985 has 16 divisors (see below), whose sum is σ = 266112. Its totient is φ = 124800.

The previous prime is 187973. The next prime is 187987. The reversal of 187985 is 589781.

It is not a de Polignac number, because 187985 - 2⁶ = 187921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (187987) 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, 1370 + ... + 1500.

It is an arithmetic number, because the mean of its divisors is an integer number (16632).

2¹⁸⁷⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

187985 is a deficient number, since it is larger than the sum of its proper divisors (78127).

187985 is a wasteful number, since it uses less digits than its factorization.

187985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184.

The product of its digits is 20160, while the sum is 38.

The square root of 187985 is about 433.5723699684. The cubic root of 187985 is about 57.2850195410.

The spelling of 187985 in words is "one hundred eighty-seven thousand, nine hundred eighty-five".