195944065 has 4 divisors (see below), whose sum is σ = 235132884. Its totient is φ = 156755248.

The previous prime is 195944053. The next prime is 195944069. The reversal of 195944065 is 560449591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149035264 + 46908801 = 12208^2 + 6849^2 .

It is a cyclic number.

It is not a de Polignac number, because 195944065 - 2²³ = 187555457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195944069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19594402 + ... + 19594411.

It is an arithmetic number, because the mean of its divisors is an integer number (58783221).

Almost surely, 2^195944065 is an apocalyptic number.

It is an amenable number.

195944065 is a deficient number, since it is larger than the sum of its proper divisors (39188819).

195944065 is an equidigital number, since it uses as much as digits as its factorization.

195944065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39188818.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 195944065 is about 13998.0021788825. The cubic root of 195944065 is about 580.8233105429.

The spelling of 195944065 in words is "one hundred ninety-five million, nine hundred forty-four thousand, sixty-five".