2291677649 has 2 divisors, whose sum is σ = 2291677650. Its totient is φ = 2291677648.

The previous prime is 2291677637. The next prime is 2291677651. The reversal of 2291677649 is 9467761922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2168578624 + 123099025 = 46568^2 + 11095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291677649 is a prime.

It is a Sophie Germain prime.

Together with 2291677651, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2291677649.

It is not a weakly prime, because it can be changed into another prime (2291677669) 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, 1145838824 + 1145838825.

It is an arithmetic number, because the mean of its divisors is an integer number (1145838825).

Almost surely, 2^2291677649 is an apocalyptic number.

It is an amenable number.

2291677649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291677649 is an equidigital number, since it uses as much as digits as its factorization.

2291677649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 53.

The square root of 2291677649 is about 47871.4700944101. The cubic root of 2291677649 is about 1318.4120883089.

The spelling of 2291677649 in words is "two billion, two hundred ninety-one million, six hundred seventy-seven thousand, six hundred forty-nine".