1312660444 has 6 divisors (see below), whose sum is σ = 2297155784. Its totient is φ = 656330220.

The previous prime is 1312660421. The next prime is 1312660463. The reversal of 1312660444 is 4440662131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164082552 + ... + 164082559.

Almost surely, 2^1312660444 is an apocalyptic number.

It is an amenable number.

1312660444 is a deficient number, since it is larger than the sum of its proper divisors (984495340).

1312660444 is a wasteful number, since it uses less digits than its factorization.

1312660444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328165115 (or 328165113 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1312660444 is about 36230.6561353780. The cubic root of 1312660444 is about 1094.9243969681.

The spelling of 1312660444 in words is "one billion, three hundred twelve million, six hundred sixty thousand, four hundred forty-four".