1316394727 has 4 divisors (see below), whose sum is σ = 1385678680. Its totient is φ = 1247110776.

The previous prime is 1316394713. The next prime is 1316394731. The reversal of 1316394727 is 7274936131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1316394727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316394707) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 34641948 + ... + 34641985.

It is an arithmetic number, because the mean of its divisors is an integer number (346419670).

Almost surely, 2^1316394727 is an apocalyptic number.

1316394727 is a deficient number, since it is larger than the sum of its proper divisors (69283953).

1316394727 is an equidigital number, since it uses as much as digits as its factorization.

1316394727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69283952.

The product of its digits is 190512, while the sum is 43.

The square root of 1316394727 is about 36282.1543875222. The cubic root of 1316394727 is about 1095.9617016360.

The spelling of 1316394727 in words is "one billion, three hundred sixteen million, three hundred ninety-four thousand, seven hundred twenty-seven".