2195968321 has 2 divisors, whose sum is σ = 2195968322. Its totient is φ = 2195968320.

The previous prime is 2195968273. The next prime is 2195968331. The reversal of 2195968321 is 1238695912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2117840400 + 78127921 = 46020^2 + 8839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2195968321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2195968331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097984160 + 1097984161.

It is an arithmetic number, because the mean of its divisors is an integer number (1097984161).

Almost surely, 2^2195968321 is an apocalyptic number.

It is an amenable number.

2195968321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2195968321 is an equidigital number, since it uses as much as digits as its factorization.

2195968321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 46.

The square root of 2195968321 is about 46861.1600475276. The cubic root of 2195968321 is about 1299.7964811579.

The spelling of 2195968321 in words is "two billion, one hundred ninety-five million, nine hundred sixty-eight thousand, three hundred twenty-one".