1216118 has 8 divisors (see below), whose sum is σ = 1829520. Its totient is φ = 606280.

The previous prime is 1216109. The next prime is 1216123. The reversal of 1216118 is 8116121.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1216118.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 263 + ... + 1581.

It is an arithmetic number, because the mean of its divisors is an integer number (228690).

2^1216118 is an apocalyptic number.

1216118 is a deficient number, since it is larger than the sum of its proper divisors (613402).

1216118 is a wasteful number, since it uses less digits than its factorization.

1216118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782.

The product of its digits is 96, while the sum is 20.

The square root of 1216118 is about 1102.7774027427. Note that the first 3 decimals coincide. The cubic root of 1216118 is about 106.7395183744.

The spelling of 1216118 in words is "one million, two hundred sixteen thousand, one hundred eighteen".