2243798218 has 4 divisors (see below), whose sum is σ = 3365697330. Its totient is φ = 1121899108.

The previous prime is 2243798209. The next prime is 2243798231. The reversal of 2243798218 is 8128973422.

2243798218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8128973422 = 2 ⋅4064486711.

It can be written as a sum of positive squares in only one way, i.e., 1581096169 + 662702049 = 39763^2 + 25743^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560949553 + ... + 560949556.

Almost surely, 2^2243798218 is an apocalyptic number.

2243798218 is a deficient number, since it is larger than the sum of its proper divisors (1121899112).

2243798218 is a wasteful number, since it uses less digits than its factorization.

2243798218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121899111.

The product of its digits is 387072, while the sum is 46.

The square root of 2243798218 is about 47368.7472707480. The cubic root of 2243798218 is about 1309.1656435539.

The spelling of 2243798218 in words is "two billion, two hundred forty-three million, seven hundred ninety-eight thousand, two hundred eighteen".