18336118 has 4 divisors (see below), whose sum is σ = 27504180. Its totient is φ = 9168058.

The previous prime is 18336107. The next prime is 18336167. The reversal of 18336118 is 81163381.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18336118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4584028 + ... + 4584031.

It is an arithmetic number, because the mean of its divisors is an integer number (6876045).

Almost surely, 2^18336118 is an apocalyptic number.

18336118 is a deficient number, since it is larger than the sum of its proper divisors (9168062).

18336118 is an equidigital number, since it uses as much as digits as its factorization.

18336118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9168061.

The product of its digits is 3456, while the sum is 31.

The square root of 18336118 is about 4282.0693595504. The cubic root of 18336118 is about 263.6953460724.

Adding to 18336118 its reverse (81163381), we get a palindrome (99499499).

The spelling of 18336118 in words is "eighteen million, three hundred thirty-six thousand, one hundred eighteen".