2238448309 has 2 divisors, whose sum is σ = 2238448310. Its totient is φ = 2238448308.

The previous prime is 2238448283. The next prime is 2238448321. The reversal of 2238448309 is 9038448322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2108830084 + 129618225 = 45922^2 + 11385^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238448309 - 2¹¹ = 2238446261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2238448369) 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, 1119224154 + 1119224155.

It is an arithmetic number, because the mean of its divisors is an integer number (1119224155).

Almost surely, 2^2238448309 is an apocalyptic number.

It is an amenable number.

2238448309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238448309 is an equidigital number, since it uses as much as digits as its factorization.

2238448309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 2238448309 is about 47312.2426967904. The cubic root of 2238448309 is about 1308.1243302294.

The spelling of 2238448309 in words is "two billion, two hundred thirty-eight million, four hundred forty-eight thousand, three hundred nine".