12818491 has 8 divisors (see below), whose sum is σ = 14766080. Its totient is φ = 10900008.

The previous prime is 12818473. The next prime is 12818503. The reversal of 12818491 is 19481821.

12818491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12818491 - 2⁹ = 12817979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12818401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6321 + ... + 8098.

It is an arithmetic number, because the mean of its divisors is an integer number (1845760).

Almost surely, 2^12818491 is an apocalyptic number.

12818491 is a deficient number, since it is larger than the sum of its proper divisors (1947589).

12818491 is a wasteful number, since it uses less digits than its factorization.

12818491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14553.

The product of its digits is 4608, while the sum is 34.

The square root of 12818491 is about 3580.2920271955. The cubic root of 12818491 is about 234.0340065511.

The spelling of 12818491 in words is "twelve million, eight hundred eighteen thousand, four hundred ninety-one".