2270857691 has 2 divisors, whose sum is σ = 2270857692. Its totient is φ = 2270857690.

The previous prime is 2270857679. The next prime is 2270857697. The reversal of 2270857691 is 1967580722.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2270857691 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2270857697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135428845 + 1135428846.

It is an arithmetic number, because the mean of its divisors is an integer number (1135428846).

Almost surely, 2^2270857691 is an apocalyptic number.

2270857691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2270857691 is an equidigital number, since it uses as much as digits as its factorization.

2270857691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 2270857691 is about 47653.5170895077. The cubic root of 2270857691 is about 1314.4073318983.

The spelling of 2270857691 in words is "two billion, two hundred seventy million, eight hundred fifty-seven thousand, six hundred ninety-one".