2205450809 has 2 divisors, whose sum is σ = 2205450810. Its totient is φ = 2205450808.

The previous prime is 2205450781. The next prime is 2205450829. The reversal of 2205450809 is 9080545022.

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., 1747490809 + 457960000 = 41803^2 + 21400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205450809 - 2⁸ = 2205450553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2205450829) 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, 1102725404 + 1102725405.

It is an arithmetic number, because the mean of its divisors is an integer number (1102725405).

Almost surely, 2^2205450809 is an apocalyptic number.

It is an amenable number.

2205450809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205450809 is an equidigital number, since it uses as much as digits as its factorization.

2205450809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 2205450809 is about 46962.2274705960. The cubic root of 2205450809 is about 1301.6646936268.

The spelling of 2205450809 in words is "two billion, two hundred five million, four hundred fifty thousand, eight hundred nine".