1166818 has 4 divisors (see below), whose sum is σ = 1750230. Its totient is φ = 583408.

The previous prime is 1166807. The next prime is 1166827. The reversal of 1166818 is 8186611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1159929 + 6889 = 1077^2 + 83^2 .

It is a super-2 number, since 2×1166818² = 2722928490248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1166818.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 291703 + ... + 291706.

2^1166818 is an apocalyptic number.

1166818 is a deficient number, since it is larger than the sum of its proper divisors (583412).

1166818 is an equidigital number, since it uses as much as digits as its factorization.

1166818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583411.

The product of its digits is 2304, while the sum is 31.

The square root of 1166818 is about 1080.1935011839. The cubic root of 1166818 is about 105.2772115534.

The spelling of 1166818 in words is "one million, one hundred sixty-six thousand, eight hundred eighteen".