195985 has 8 divisors (see below), whose sum is σ = 247680. Its totient is φ = 148464.

The previous prime is 195977. The next prime is 195991. The reversal of 195985 is 589591.

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 195985 - 2³ = 195977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937 + ... + 1126.

It is an arithmetic number, because the mean of its divisors is an integer number (30960).

2¹⁹⁵⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

195985 is a deficient number, since it is larger than the sum of its proper divisors (51695).

195985 is a wasteful number, since it uses less digits than its factorization.

195985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087.

The product of its digits is 16200, while the sum is 37.

The square root of 195985 is about 442.7019313263. The cubic root of 195985 is about 58.0863754647.

The spelling of 195985 in words is "one hundred ninety-five thousand, nine hundred eighty-five".