195601761 has 12 divisors (see below), whose sum is σ = 285449892. Its totient is φ = 129056256.

The previous prime is 195601759. The next prime is 195601771. The reversal of 195601761 is 167106591.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 141491025 + 54110736 = 11895^2 + 7356^2 .

It is not a de Polignac number, because 195601761 - 2¹ = 195601759 is a prime.

It is a super-2 number, since 2×195601761² = 76520097812602242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (195601741) 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, 111156 + ... + 112901.

It is an arithmetic number, because the mean of its divisors is an integer number (23787491).

Almost surely, 2^195601761 is an apocalyptic number.

It is an amenable number.

195601761 is a deficient number, since it is larger than the sum of its proper divisors (89848131).

195601761 is a wasteful number, since it uses less digits than its factorization.

195601761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224160 (or 224157 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 195601761 is about 13985.7699466279. The cubic root of 195601761 is about 580.4848907836.

It can be divided in two parts, 19560 and 1761, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 195601761 in words is "one hundred ninety-five million, six hundred one thousand, seven hundred sixty-one".