2205659813 has 4 divisors (see below), whose sum is σ = 2520754080. Its totient is φ = 1890565548.

The previous prime is 2205659803. The next prime is 2205659831. The reversal of 2205659813 is 3189565022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2205659813 - 2⁸ = 2205659557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205659803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157547123 + ... + 157547136.

It is an arithmetic number, because the mean of its divisors is an integer number (630188520).

Almost surely, 2^2205659813 is an apocalyptic number.

It is an amenable number.

2205659813 is a deficient number, since it is larger than the sum of its proper divisors (315094267).

2205659813 is an equidigital number, since it uses as much as digits as its factorization.

2205659813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315094266.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 2205659813 is about 46964.4526530439. The cubic root of 2205659813 is about 1301.7058106225.

The spelling of 2205659813 in words is "two billion, two hundred five million, six hundred fifty-nine thousand, eight hundred thirteen".