11816918 has 4 divisors (see below), whose sum is σ = 17725380. Its totient is φ = 5908458.

The previous prime is 11816911. The next prime is 11816923. The reversal of 11816918 is 81961811.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11816911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2954228 + ... + 2954231.

It is an arithmetic number, because the mean of its divisors is an integer number (4431345).

Almost surely, 2^11816918 is an apocalyptic number.

11816918 is a deficient number, since it is larger than the sum of its proper divisors (5908462).

11816918 is an equidigital number, since it uses as much as digits as its factorization.

11816918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5908461.

The product of its digits is 3456, while the sum is 35.

The square root of 11816918 is about 3437.5744355577. The cubic root of 11816918 is about 227.7725622619.

The spelling of 11816918 in words is "eleven million, eight hundred sixteen thousand, nine hundred eighteen".