195843421764 has 27 divisors (see below), whose sum is σ = 495055361437. Its totient is φ = 65280255504.

The previous prime is 195843421757. The next prime is 195843421793. The reversal of 195843421764 is 467124348591.

The square root of 195843421764 is 442542.

It is a perfect power (a square), and thus also a powerful number.

195843421764 is a `hidden beast` number, since 1 + 9 + 584 + 3 + 42 + 17 + 6 + 4 = 666.

195843421764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 34875562500 + 160967859264 = 186750^2 + 401208^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195843421764.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2618374 + ... + 2692130.

Almost surely, 2^195843421764 is an apocalyptic number.

195843421764 is the 442542-nd square number.

It is an amenable number.

195843421764 is an abundant number, since it is smaller than the sum of its proper divisors (299211939673).

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

195843421764 is an frugal number, since it uses more digits than its factorization.

195843421764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147524 (or 73762 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 195843421764 in words is "one hundred ninety-five billion, eight hundred forty-three million, four hundred twenty-one thousand, seven hundred sixty-four".