12618322 has 4 divisors (see below), whose sum is σ = 18927486. Its totient is φ = 6309160.

The previous prime is 12618317. The next prime is 12618323. The reversal of 12618322 is 22381621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22381621 = 283 ⋅79087.

It can be written as a sum of positive squares in only one way, i.e., 10118761 + 2499561 = 3181^2 + 1581^2 .

It is not an unprimeable number, because it can be changed into a prime (12618323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3154579 + ... + 3154582.

Almost surely, 2^12618322 is an apocalyptic number.

12618322 is a deficient number, since it is larger than the sum of its proper divisors (6309164).

12618322 is an equidigital number, since it uses as much as digits as its factorization.

12618322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6309163.

The product of its digits is 1152, while the sum is 25.

The square root of 12618322 is about 3552.2277517074. The cubic root of 12618322 is about 232.8094126912.

Adding to 12618322 its reverse (22381621), we get a palindrome (34999943).

The spelling of 12618322 in words is "twelve million, six hundred eighteen thousand, three hundred twenty-two".