1326440012 has 12 divisors (see below), whose sum is σ = 2323413120. Its totient is φ = 662607696.

The previous prime is 1326439999. The next prime is 1326440023. The reversal of 1326440012 is 2100446231.

It is a self number, because there is not a number n which added to its sum of digits gives 1326440012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148187 + ... + 156882.

It is an arithmetic number, because the mean of its divisors is an integer number (193617760).

Almost surely, 2^1326440012 is an apocalyptic number.

It is an amenable number.

1326440012 is a deficient number, since it is larger than the sum of its proper divisors (996973108).

1326440012 is a wasteful number, since it uses less digits than its factorization.

1326440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306160 (or 306158 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1326440012 is about 36420.3241611054. The cubic root of 1326440012 is about 1098.7423676529.

Adding to 1326440012 its reverse (2100446231), we get a palindrome (3426886243).

The spelling of 1326440012 in words is "one billion, three hundred twenty-six million, four hundred forty thousand, twelve".