2266891309 has 2 divisors, whose sum is σ = 2266891310. Its totient is φ = 2266891308.

The previous prime is 2266891307. The next prime is 2266891313. The reversal of 2266891309 is 9031986622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1140953284 + 1125938025 = 33778^2 + 33555^2 .

It is a cyclic number.

It is not a de Polignac number, because 2266891309 - 2¹ = 2266891307 is a prime.

Together with 2266891307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2266891301) 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, 1133445654 + 1133445655.

It is an arithmetic number, because the mean of its divisors is an integer number (1133445655).

Almost surely, 2^2266891309 is an apocalyptic number.

It is an amenable number.

2266891309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2266891309 is an equidigital number, since it uses as much as digits as its factorization.

2266891309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2266891309 is about 47611.8820148920. The cubic root of 2266891309 is about 1313.6416182951.

The spelling of 2266891309 in words is "two billion, two hundred sixty-six million, eight hundred ninety-one thousand, three hundred nine".