1808818 has 8 divisors (see below), whose sum is σ = 2959920. Its totient is φ = 822180.

The previous prime is 1808813. The next prime is 1808831. The reversal of 1808818 is 8188081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1808813) 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, 41088 + ... + 41131.

It is an arithmetic number, because the mean of its divisors is an integer number (369990).

2^1808818 is an apocalyptic number.

1808818 is a deficient number, since it is larger than the sum of its proper divisors (1151102).

1808818 is a wasteful number, since it uses less digits than its factorization.

1808818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82232.

The product of its (nonzero) digits is 4096, while the sum is 34.

The square root of 1808818 is about 1344.9230461257. The cubic root of 1808818 is about 121.8423566311.

It can be divided in two parts, 180 and 8818, that added together give a palindrome (8998).

The spelling of 1808818 in words is "one million, eight hundred eight thousand, eight hundred eighteen".