2291411809 has 2 divisors, whose sum is σ = 2291411810. Its totient is φ = 2291411808.

The previous prime is 2291411807. The next prime is 2291411831. The reversal of 2291411809 is 9081141922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2272619584 + 18792225 = 47672^2 + 4335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2291411809 - 2¹ = 2291411807 is a prime.

Together with 2291411807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2291411807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145705904 + 1145705905.

It is an arithmetic number, because the mean of its divisors is an integer number (1145705905).

Almost surely, 2^2291411809 is an apocalyptic number.

It is an amenable number.

2291411809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291411809 is an equidigital number, since it uses as much as digits as its factorization.

2291411809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 2291411809 is about 47868.6934122919. The cubic root of 2291411809 is about 1318.3611067026.

The spelling of 2291411809 in words is "two billion, two hundred ninety-one million, four hundred eleven thousand, eight hundred nine".