2291195279 has 2 divisors, whose sum is σ = 2291195280. Its totient is φ = 2291195278.

The previous prime is 2291195267. The next prime is 2291195287. The reversal of 2291195279 is 9725911922.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2291195279 - 2²⁴ = 2274418063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2291195299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145597639 + 1145597640.

It is an arithmetic number, because the mean of its divisors is an integer number (1145597640).

Almost surely, 2^2291195279 is an apocalyptic number.

2291195279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291195279 is an equidigital number, since it uses as much as digits as its factorization.

2291195279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 47.

The square root of 2291195279 is about 47866.4316510015. The cubic root of 2291195279 is about 1318.3195786337.

The spelling of 2291195279 in words is "two billion, two hundred ninety-one million, one hundred ninety-five thousand, two hundred seventy-nine".