195613 has 4 divisors (see below), whose sum is σ = 213408. Its totient is φ = 177820.

The previous prime is 195599. The next prime is 195659. The reversal of 195613 is 316591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 195613 - 2⁵ = 195581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195413) 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 3 ways as a sum of consecutive naturals, for example, 8881 + ... + 8902.

It is an arithmetic number, because the mean of its divisors is an integer number (53352).

2¹⁹⁵⁶¹³ is an apocalyptic number.

It is an amenable number.

195613 is a deficient number, since it is larger than the sum of its proper divisors (17795).

195613 is a wasteful number, since it uses less digits than its factorization.

195613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17794.

The product of its digits is 810, while the sum is 25.

The square root of 195613 is about 442.2815845138. The cubic root of 195613 is about 58.0496008517.

It can be divided in two parts, 195 and 613, that added together give a palindrome (808).

The spelling of 195613 in words is "one hundred ninety-five thousand, six hundred thirteen".