12653318 has 4 divisors (see below), whose sum is σ = 18979980. Its totient is φ = 6326658.

The previous prime is 12653299. The next prime is 12653323. The reversal of 12653318 is 81335621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81335621 = 389 ⋅209089.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3163328 + ... + 3163331.

It is an arithmetic number, because the mean of its divisors is an integer number (4744995).

Almost surely, 2^12653318 is an apocalyptic number.

12653318 is a deficient number, since it is larger than the sum of its proper divisors (6326662).

12653318 is an equidigital number, since it uses as much as digits as its factorization.

12653318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326661.

The product of its digits is 4320, while the sum is 29.

The square root of 12653318 is about 3557.1502639051. The cubic root of 12653318 is about 233.0244406936.

Adding to 12653318 its reverse (81335621), we get a palindrome (93988939).

The spelling of 12653318 in words is "twelve million, six hundred fifty-three thousand, three hundred eighteen".