12573818 has 4 divisors (see below), whose sum is σ = 18860730. Its totient is φ = 6286908.

The previous prime is 12573811. The next prime is 12573833. The reversal of 12573818 is 81837521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10067929 + 2505889 = 3173^2 + 1583^2 .

It is not an unprimeable number, because it can be changed into a prime (12573811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3143453 + ... + 3143456.

Almost surely, 2^12573818 is an apocalyptic number.

12573818 is a deficient number, since it is larger than the sum of its proper divisors (6286912).

12573818 is an equidigital number, since it uses as much as digits as its factorization.

12573818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286911.

The product of its digits is 13440, while the sum is 35.

The square root of 12573818 is about 3545.9579805745. The cubic root of 12573818 is about 232.5353890711.

The spelling of 12573818 in words is "twelve million, five hundred seventy-three thousand, eight hundred eighteen".