2202818 has 4 divisors (see below), whose sum is σ = 3304230. Its totient is φ = 1101408.

The previous prime is 2202817. The next prime is 2202853. The reversal of 2202818 is 8182022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8182022 = 2 ⋅4091011.

It can be written as a sum of positive squares in only one way, i.e., 1605289 + 597529 = 1267^2 + 773^2 .

It is a super-2 number, since 2×2202818² = 9704814282248, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2202793 and 2202802.

It is not an unprimeable number, because it can be changed into a prime (2202817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550703 + ... + 550706.

2^2202818 is an apocalyptic number.

2202818 is a deficient number, since it is larger than the sum of its proper divisors (1101412).

2202818 is a wasteful number, since it uses less digits than its factorization.

2202818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101411.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 2202818 is about 1484.1893410209. The cubic root of 2202818 is about 130.1146523054.

The spelling of 2202818 in words is "two million, two hundred two thousand, eight hundred eighteen".