1317127663 has 4 divisors (see below), whose sum is σ = 1317904600. Its totient is φ = 1316350728.

The previous prime is 1317127613. The next prime is 1317127681. The reversal of 1317127663 is 3667217131.

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

It is a cyclic number.

It is not a de Polignac number, because 1317127663 - 2¹³ = 1317119471 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 (1317127613) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 385920 + ... + 389317.

It is an arithmetic number, because the mean of its divisors is an integer number (329476150).

Almost surely, 2^1317127663 is an apocalyptic number.

1317127663 is a deficient number, since it is larger than the sum of its proper divisors (776937).

1317127663 is an equidigital number, since it uses as much as digits as its factorization.

1317127663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776936.

The product of its digits is 31752, while the sum is 37.

The square root of 1317127663 is about 36292.2534847314. The cubic root of 1317127663 is about 1096.1650653473.

The spelling of 1317127663 in words is "one billion, three hundred seventeen million, one hundred twenty-seven thousand, six hundred sixty-three".