12918818 has 8 divisors (see below), whose sum is σ = 21139920. Its totient is φ = 5872180.

The previous prime is 12918811. The next prime is 12918839. The reversal of 12918818 is 81881921.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (12918811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293588 + ... + 293631.

It is an arithmetic number, because the mean of its divisors is an integer number (2642490).

Almost surely, 2^12918818 is an apocalyptic number.

12918818 is a deficient number, since it is larger than the sum of its proper divisors (8221102).

12918818 is a wasteful number, since it uses less digits than its factorization.

12918818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587232.

The product of its digits is 9216, while the sum is 38.

The square root of 12918818 is about 3594.2757267633. The cubic root of 12918818 is about 234.6429949686.

The spelling of 12918818 in words is "twelve million, nine hundred eighteen thousand, eight hundred eighteen".