195865 has 8 divisors (see below), whose sum is σ = 240768. Its totient is φ = 152880.

The previous prime is 195863. The next prime is 195869. The reversal of 195865 is 568591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195865 - 2¹ = 195863 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 195865.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195863) by changing a digit.

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, 241 + ... + 670.

It is an arithmetic number, because the mean of its divisors is an integer number (30096).

2¹⁹⁵⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

195865 is a deficient number, since it is larger than the sum of its proper divisors (44903).

195865 is an equidigital number, since it uses as much as digits as its factorization.

195865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959.

The product of its digits is 10800, while the sum is 34.

The square root of 195865 is about 442.5663792020. The cubic root of 195865 is about 58.0745177747.

It can be divided in two parts, 19586 and 5, that added together give a palindrome (19591).

The spelling of 195865 in words is "one hundred ninety-five thousand, eight hundred sixty-five".