1318816 has 12 divisors (see below), whose sum is σ = 2596482. Its totient is φ = 659392.

The previous prime is 1318789. The next prime is 1318829. The reversal of 1318816 is 6188131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 672400 + 646416 = 820^2 + 804^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20575 + ... + 20638.

2^1318816 is an apocalyptic number.

1318816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1318816 is a deficient number, since it is larger than the sum of its proper divisors (1277666).

1318816 is an equidigital number, since it uses as much as digits as its factorization.

1318816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41223 (or 41215 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 1318816 is about 1148.3971438488. The cubic root of 1318816 is about 109.6633232023.

The spelling of 1318816 in words is "one million, three hundred eighteen thousand, eight hundred sixteen".