12819813 has 8 divisors (see below), whose sum is σ = 17992800. Its totient is φ = 8096688.

The previous prime is 12819773. The next prime is 12819841. The reversal of 12819813 is 31891821.

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

It is not a de Polignac number, because 12819813 - 2¹⁰ = 12818789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12819413) 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 7 ways as a sum of consecutive naturals, for example, 112398 + ... + 112511.

It is an arithmetic number, because the mean of its divisors is an integer number (2249100).

Almost surely, 2^12819813 is an apocalyptic number.

It is an amenable number.

12819813 is a deficient number, since it is larger than the sum of its proper divisors (5172987).

12819813 is a wasteful number, since it uses less digits than its factorization.

12819813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224931.

The product of its digits is 3456, while the sum is 33.

The square root of 12819813 is about 3580.4766442472. The cubic root of 12819813 is about 234.0420517602.

The spelling of 12819813 in words is "twelve million, eight hundred nineteen thousand, eight hundred thirteen".