2203509409 has 2 divisors, whose sum is σ = 2203509410. Its totient is φ = 2203509408.

The previous prime is 2203509367. The next prime is 2203509431. The reversal of 2203509409 is 9049053022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1977758784 + 225750625 = 44472^2 + 15025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2203509409 - 2²⁵ = 2169954977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2203509449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101754704 + 1101754705.

It is an arithmetic number, because the mean of its divisors is an integer number (1101754705).

Almost surely, 2^2203509409 is an apocalyptic number.

It is an amenable number.

2203509409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2203509409 is an equidigital number, since it uses as much as digits as its factorization.

2203509409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2203509409 is about 46941.5531166151. The cubic root of 2203509409 is about 1301.2826411703.

The spelling of 2203509409 in words is "two billion, two hundred three million, five hundred nine thousand, four hundred nine".