1316072668 has 6 divisors (see below), whose sum is σ = 2303127176. Its totient is φ = 658036332.

The previous prime is 1316072609. The next prime is 1316072671. The reversal of 1316072668 is 8662706131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1316072668.

It is a congruent number.

It is an unprimeable number.

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, 164509080 + ... + 164509087.

Almost surely, 2^1316072668 is an apocalyptic number.

It is an amenable number.

1316072668 is a deficient number, since it is larger than the sum of its proper divisors (987054508).

1316072668 is a wasteful number, since it uses less digits than its factorization.

1316072668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329018171 (or 329018169 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1316072668 is about 36277.7158597396. The cubic root of 1316072668 is about 1095.8723178287.

Adding to 1316072668 its reverse (8662706131), we get a palindrome (9978778799).

The spelling of 1316072668 in words is "one billion, three hundred sixteen million, seventy-two thousand, six hundred sixty-eight".