12818534 has 4 divisors (see below), whose sum is σ = 19227804. Its totient is φ = 6409266.

The previous prime is 12818513. The next prime is 12818543. The reversal of 12818534 is 43581821.

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 12818534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204632 + ... + 3204635.

It is an arithmetic number, because the mean of its divisors is an integer number (4806951).

Almost surely, 2^12818534 is an apocalyptic number.

12818534 is a deficient number, since it is larger than the sum of its proper divisors (6409270).

12818534 is an equidigital number, since it uses as much as digits as its factorization.

12818534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409269.

The product of its digits is 7680, while the sum is 32.

The square root of 12818534 is about 3580.2980322873. The cubic root of 12818534 is about 234.0342682421.

The spelling of 12818534 in words is "twelve million, eight hundred eighteen thousand, five hundred thirty-four".