1818204 has 12 divisors (see below), whose sum is σ = 4242504. Its totient is φ = 606064.

The previous prime is 1818199. The next prime is 1818209. The reversal of 1818204 is 4028181.

It is an interprime number because it is at equal distance from previous prime (1818199) and next prime (1818209).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818209) 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, 75747 + ... + 75770.

It is an arithmetic number, because the mean of its divisors is an integer number (353542).

2^1818204 is an apocalyptic number.

It is an amenable number.

1818204 is an abundant number, since it is smaller than the sum of its proper divisors (2424300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1818204 is a wasteful number, since it uses less digits than its factorization.

1818204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151524 (or 151522 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1818204 is about 1348.4079501397. The cubic root of 1818204 is about 122.0527407908.

It can be divided in two parts, 181 and 8204, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 1818204 in words is "one million, eight hundred eighteen thousand, two hundred four".