2203218813 has 4 divisors (see below), whose sum is σ = 2937625088. Its totient is φ = 1468812540.

The previous prime is 2203218791. The next prime is 2203218817. The reversal of 2203218813 is 3188123022.

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 not a de Polignac number, because 2203218813 - 2⁹ = 2203218301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203218817) 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, 367203133 + ... + 367203138.

It is an arithmetic number, because the mean of its divisors is an integer number (734406272).

Almost surely, 2^2203218813 is an apocalyptic number.

It is an amenable number.

2203218813 is a deficient number, since it is larger than the sum of its proper divisors (734406275).

2203218813 is an equidigital number, since it uses as much as digits as its factorization.

2203218813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734406274.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 2203218813 is about 46938.4577185915. The cubic root of 2203218813 is about 1301.2254348258.

The spelling of 2203218813 in words is "two billion, two hundred three million, two hundred eighteen thousand, eight hundred thirteen".