2273787809 has 2 divisors, whose sum is σ = 2273787810. Its totient is φ = 2273787808.

The previous prime is 2273787793. The next prime is 2273787823. The reversal of 2273787809 is 9087873722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1705442209 + 568345600 = 41297^2 + 23840^2 .

It is a cyclic number.

It is not a de Polignac number, because 2273787809 - 2⁴ = 2273787793 is a prime.

It is a super-2 number, since 2×2273787809² = 10340222000714040962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2273787869) 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, 1136893904 + 1136893905.

It is an arithmetic number, because the mean of its divisors is an integer number (1136893905).

Almost surely, 2^2273787809 is an apocalyptic number.

It is an amenable number.

2273787809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2273787809 is an equidigital number, since it uses as much as digits as its factorization.

2273787809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The square root of 2273787809 is about 47684.2511632510. The cubic root of 2273787809 is about 1314.9724213640.

The spelling of 2273787809 in words is "two billion, two hundred seventy-three million, seven hundred eighty-seven thousand, eight hundred nine".