1118218 has 8 divisors (see below), whose sum is σ = 1687140. Its totient is φ = 555840.

The previous prime is 1118203. The next prime is 1118219. The reversal of 1118218 is 8128111.

It can be written as a sum of positive squares in 2 ways, for example, as 1108809 + 9409 = 1053^2 + 97^2 .

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

It is a super-2 number, since 2×1118218² = 2500822991048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1118219) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1183 + ... + 1906.

2^1118218 is an apocalyptic number.

1118218 is a deficient number, since it is larger than the sum of its proper divisors (568922).

1118218 is a wasteful number, since it uses less digits than its factorization.

1118218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272.

The product of its digits is 128, while the sum is 22.

The square root of 1118218 is about 1057.4582734085. The cubic root of 1118218 is about 103.7947752737.

The spelling of 1118218 in words is "one million, one hundred eighteen thousand, two hundred eighteen".