1321446668 has 12 divisors (see below), whose sum is σ = 2356164720. Its totient is φ = 648256752.

The previous prime is 1321446653. The next prime is 1321446671. The reversal of 1321446668 is 8666441231.

It is a happy number.

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, 3116408 + ... + 3116831.

It is an arithmetic number, because the mean of its divisors is an integer number (196347060).

Almost surely, 2^1321446668 is an apocalyptic number.

It is an amenable number.

1321446668 is a deficient number, since it is larger than the sum of its proper divisors (1034718052).

1321446668 is a wasteful number, since it uses less digits than its factorization.

1321446668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233296 (or 6233294 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 1321446668 is about 36351.7079103582. The cubic root of 1321446668 is about 1097.3619063040.

Adding to 1321446668 its reverse (8666441231), we get a palindrome (9987887899).

The spelling of 1321446668 in words is "one billion, three hundred twenty-one million, four hundred forty-six thousand, six hundred sixty-eight".