2209305345 has 16 divisors (see below), whose sum is σ = 3806803392. Its totient is φ = 1087657920.

The previous prime is 2209305317. The next prime is 2209305349. The reversal of 2209305345 is 5435039022.

It is not a de Polignac number, because 2209305345 - 2⁶ = 2209305281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2209305349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5664691 + ... + 5665080.

It is an arithmetic number, because the mean of its divisors is an integer number (237925212).

Almost surely, 2^2209305345 is an apocalyptic number.

It is an amenable number.

2209305345 is a deficient number, since it is larger than the sum of its proper divisors (1597498047).

2209305345 is a wasteful number, since it uses less digits than its factorization.

2209305345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11329792.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 2209305345 is about 47003.2482388186. The cubic root of 2209305345 is about 1302.4225724338.

The spelling of 2209305345 in words is "two billion, two hundred nine million, three hundred five thousand, three hundred forty-five".