2245747709 has 2 divisors, whose sum is σ = 2245747710. Its totient is φ = 2245747708.

The previous prime is 2245747657. The next prime is 2245747729. The reversal of 2245747709 is 9077475422.

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., 1989427609 + 256320100 = 44603^2 + 16010^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245747709 - 2²⁰ = 2244699133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2245747729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122873854 + 1122873855.

It is an arithmetic number, because the mean of its divisors is an integer number (1122873855).

Almost surely, 2^2245747709 is an apocalyptic number.

It is an amenable number.

2245747709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2245747709 is an equidigital number, since it uses as much as digits as its factorization.

2245747709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 47.

The square root of 2245747709 is about 47389.3206218447. The cubic root of 2245747709 is about 1309.5446835565.

The spelling of 2245747709 in words is "two billion, two hundred forty-five million, seven hundred forty-seven thousand, seven hundred nine".