195919636 has 12 divisors (see below), whose sum is σ = 374028480. Its totient is φ = 89054360.

The previous prime is 195919609. The next prime is 195919637. The reversal of 195919636 is 636919591.

It is a self number, because there is not a number n which added to its sum of digits gives 195919636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195919637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2226316 + ... + 2226403.

It is an arithmetic number, because the mean of its divisors is an integer number (31169040).

Almost surely, 2^195919636 is an apocalyptic number.

It is an amenable number.

195919636 is a deficient number, since it is larger than the sum of its proper divisors (178108844).

195919636 is a wasteful number, since it uses less digits than its factorization.

195919636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452734 (or 4452732 counting only the distinct ones).

The product of its digits is 393660, while the sum is 49.

The square root of 195919636 is about 13997.1295628782. The cubic root of 195919636 is about 580.7991718134.

The spelling of 195919636 in words is "one hundred ninety-five million, nine hundred nineteen thousand, six hundred thirty-six".