195871 has 12 divisors (see below), whose sum is σ = 226920. Its totient is φ = 168480.

The previous prime is 195869. The next prime is 195883. The reversal of 195871 is 178591.

It is not a de Polignac number, because 195871 - 2¹ = 195869 is a prime.

195871 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3181 + ... + 3241.

It is an arithmetic number, because the mean of its divisors is an integer number (18910).

2¹⁹⁵⁸⁷¹ is an apocalyptic number.

195871 is a deficient number, since it is larger than the sum of its proper divisors (31049).

195871 is a wasteful number, since it uses less digits than its factorization.

195871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 93 counting only the distinct ones).

The product of its digits is 2520, while the sum is 31.

The square root of 195871 is about 442.5731577943. The cubic root of 195871 is about 58.0751107742.

The spelling of 195871 in words is "one hundred ninety-five thousand, eight hundred seventy-one".