195844645 has 4 divisors (see below), whose sum is σ = 235013580. Its totient is φ = 156675712.

The previous prime is 195844633. The next prime is 195844669. The reversal of 195844645 is 546448591.

It is a happy number.

195844645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 62995969 + 132848676 = 7937^2 + 11526^2 .

It is a cyclic number.

It is not a de Polignac number, because 195844645 - 2⁵ = 195844613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 195844595 and 195844604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19584460 + ... + 19584469.

It is an arithmetic number, because the mean of its divisors is an integer number (58753395).

Almost surely, 2^195844645 is an apocalyptic number.

It is an amenable number.

195844645 is a deficient number, since it is larger than the sum of its proper divisors (39168935).

195844645 is an equidigital number, since it uses as much as digits as its factorization.

195844645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39168934.

The product of its digits is 691200, while the sum is 46.

The square root of 195844645 is about 13994.4505072547. The cubic root of 195844645 is about 580.7250593357.

The spelling of 195844645 in words is "one hundred ninety-five million, eight hundred forty-four thousand, six hundred forty-five".