195444634940 has 24 divisors (see below), whose sum is σ = 412582609152. Its totient is φ = 77768544320.

The previous prime is 195444634909. The next prime is 195444635027. The reversal of 195444634940 is 49436444591.

It is a happy number.

195444634940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25577939 + ... + 25585578.

It is an arithmetic number, because the mean of its divisors is an integer number (17190942048).

Almost surely, 2^195444634940 is an apocalyptic number.

195444634940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195444634940 is an abundant number, since it is smaller than the sum of its proper divisors (217137974212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195444634940 is a wasteful number, since it uses less digits than its factorization.

195444634940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51163717 (or 51163715 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 195444634940 in words is "one hundred ninety-five billion, four hundred forty-four million, six hundred thirty-four thousand, nine hundred forty".