2291095109 has 2 divisors, whose sum is σ = 2291095110. Its totient is φ = 2291095108.

The previous prime is 2291095061. The next prime is 2291095111. The reversal of 2291095109 is 9015901922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2249130625 + 41964484 = 47425^2 + 6478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291095109 is a prime.

Together with 2291095111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2291095199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145547554 + 1145547555.

It is an arithmetic number, because the mean of its divisors is an integer number (1145547555).

Almost surely, 2^2291095109 is an apocalyptic number.

It is an amenable number.

2291095109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291095109 is an equidigital number, since it uses as much as digits as its factorization.

2291095109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 2291095109 is about 47865.3852904163. The cubic root of 2291095109 is about 1318.3003662459.

The spelling of 2291095109 in words is "two billion, two hundred ninety-one million, ninety-five thousand, one hundred nine".