2195974261924 has 81 divisors (see below), whose sum is σ = 3974847786273. Its totient is φ = 1061549134464.

The previous prime is 2195974261909. The next prime is 2195974261937. The reversal of 2195974261924 is 4291624795912.

The square root of 2195974261924 is 1481882.

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

It can be written as a sum of positive squares in only one way, i.e., 38694824100 + 2157279437824 = 196710^2 + 1468768^2 .

It is a Duffinian number.

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 26 ways as a sum of consecutive naturals, for example, 19433400492 + ... + 19433400604.

Almost surely, 2^{2195974261924} is an apocalyptic number.

2195974261924 is the 1481882-nd square number.

It is an amenable number.

2195974261924 is a deficient number, since it is larger than the sum of its proper divisors (1778873524349).

2195974261924 is an frugal number, since it uses more digits than its factorization.

2195974261924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 277 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 61.

The spelling of 2195974261924 in words is "two trillion, one hundred ninety-five billion, nine hundred seventy-four million, two hundred sixty-one thousand, nine hundred twenty-four".