2305220909 has 2 divisors, whose sum is σ = 2305220910. Its totient is φ = 2305220908.

The previous prime is 2305220861. The next prime is 2305220921. The reversal of 2305220909 is 9090225032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1690032100 + 615188809 = 41110^2 + 24803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2305220909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2305228909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1152610454 + 1152610455.

It is an arithmetic number, because the mean of its divisors is an integer number (1152610455).

Almost surely, 2^2305220909 is an apocalyptic number.

It is an amenable number.

2305220909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2305220909 is an equidigital number, since it uses as much as digits as its factorization.

2305220909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2305220909 is about 48012.7161177120. The cubic root of 2305220909 is about 1321.0041542351.

The spelling of 2305220909 in words is "two billion, three hundred five million, two hundred twenty thousand, nine hundred nine".