1818816 has 28 divisors (see below), whose sum is σ = 4812792. Its totient is φ = 606208.

The previous prime is 1818799. The next prime is 1818833. The reversal of 1818816 is 6188181.

It is an interprime number because it is at equal distance from previous prime (1818799) and next prime (1818833).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4545 + ... + 4928.

2^1818816 is an apocalyptic number.

1818816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1818816 is an abundant number, since it is smaller than the sum of its proper divisors (2993976).

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

1818816 is an equidigital number, since it uses as much as digits as its factorization.

1818816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9488 (or 9478 counting only the distinct ones).

The product of its digits is 3072, while the sum is 33.

The square root of 1818816 is about 1348.6348653361. The cubic root of 1818816 is about 122.0664334051.

The spelling of 1818816 in words is "one million, eight hundred eighteen thousand, eight hundred sixteen".