12810918 has 8 divisors (see below), whose sum is σ = 25621848. Its totient is φ = 4270304.

The previous prime is 12810913. The next prime is 12810949. The reversal of 12810918 is 81901821.

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

12810918 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12810913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067571 + ... + 1067582.

It is an arithmetic number, because the mean of its divisors is an integer number (3202731).

Almost surely, 2^12810918 is an apocalyptic number.

12810918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12810918 is a wasteful number, since it uses less digits than its factorization.

12810918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135158.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 12810918 is about 3579.2342756517. The cubic root of 12810918 is about 233.9879093760.

The spelling of 12810918 in words is "twelve million, eight hundred ten thousand, nine hundred eighteen".