1808223 has 16 divisors (see below), whose sum is σ = 2520672. Its totient is φ = 1152000.

The previous prime is 1808207. The next prime is 1808243. The reversal of 1808223 is 3228081.

It is not a de Polignac number, because 1808223 - 2⁴ = 1808207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1808193 and 1808202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808243) 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, 7383 + ... + 7623.

It is an arithmetic number, because the mean of its divisors is an integer number (157542).

2^1808223 is an apocalyptic number.

1808223 is a deficient number, since it is larger than the sum of its proper divisors (712449).

1808223 is a wasteful number, since it uses less digits than its factorization.

1808223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1808223 is about 1344.7018256848. The cubic root of 1808223 is about 121.8289953914.

The spelling of 1808223 in words is "one million, eight hundred eight thousand, two hundred twenty-three".