2195298761 has 2 divisors, whose sum is σ = 2195298762. Its totient is φ = 2195298760.

The previous prime is 2195298719. The next prime is 2195298769. The reversal of 2195298761 is 1678925912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1225350025 + 969948736 = 35005^2 + 31144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2195298761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2195298769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097649380 + 1097649381.

It is an arithmetic number, because the mean of its divisors is an integer number (1097649381).

Almost surely, 2^2195298761 is an apocalyptic number.

It is an amenable number.

2195298761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2195298761 is an equidigital number, since it uses as much as digits as its factorization.

2195298761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 50.

The square root of 2195298761 is about 46854.0154202391. The cubic root of 2195298761 is about 1299.6643632534.

The spelling of 2195298761 in words is "two billion, one hundred ninety-five million, two hundred ninety-eight thousand, seven hundred sixty-one".