1808204 has 12 divisors (see below), whose sum is σ = 3178728. Its totient is φ = 900000.

The previous prime is 1808167. The next prime is 1808207. The reversal of 1808204 is 4028081.

It is a self number, because there is not a number n which added to its sum of digits gives 1808204.

It is not an unprimeable number, because it can be changed into a prime (1808207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104 + ... + 1904.

It is an arithmetic number, because the mean of its divisors is an integer number (264894).

2^1808204 is an apocalyptic number.

It is an amenable number.

1808204 is a deficient number, since it is larger than the sum of its proper divisors (1370524).

1808204 is a wasteful number, since it uses less digits than its factorization.

1808204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056 (or 2054 counting only the distinct ones).

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

The square root of 1808204 is about 1344.6947609030. The cubic root of 1808204 is about 121.8285686817.

The spelling of 1808204 in words is "one million, eight hundred eight thousand, two hundred four".