195644037 has 4 divisors (see below), whose sum is σ = 260858720. Its totient is φ = 130429356.

The previous prime is 195644017. The next prime is 195644047. The reversal of 195644037 is 730446591.

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 not a de Polignac number, because 195644037 - 2⁷ = 195643909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195643986 and 195644004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195644017) 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 3 ways as a sum of consecutive naturals, for example, 32607337 + ... + 32607342.

It is an arithmetic number, because the mean of its divisors is an integer number (65214680).

Almost surely, 2^195644037 is an apocalyptic number.

It is an amenable number.

195644037 is a deficient number, since it is larger than the sum of its proper divisors (65214683).

195644037 is an equidigital number, since it uses as much as digits as its factorization.

195644037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65214682.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 195644037 is about 13987.2812583432. The cubic root of 195644037 is about 580.5267084225.

The spelling of 195644037 in words is "one hundred ninety-five million, six hundred forty-four thousand, thirty-seven".