10818 has 12 divisors (see below), whose sum is σ = 23478. Its totient is φ = 3600.

The previous prime is 10799. The next prime is 10831. The reversal of 10818 is 81801.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7569 + 3249 = 87^2 + 57^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 601 = 10818 / (1 + 0 + 8 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 10818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283 + ... + 318.

2¹⁰⁸¹⁸ is an apocalyptic number.

10818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10818 is an abundant number, since it is smaller than the sum of its proper divisors (12660).

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

10818 is a wasteful number, since it uses less digits than its factorization.

10818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 10818 is about 104.0096149402. The cubic root of 10818 is about 22.1164622809.

It can be divided in two parts, 1081 and 8, that added together give a square (1089 = 33²).

The spelling of 10818 in words is "ten thousand, eight hundred eighteen".