1317468973 has 2 divisors, whose sum is σ = 1317468974. Its totient is φ = 1317468972.

The previous prime is 1317468961. The next prime is 1317468979. The reversal of 1317468973 is 3798647131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1129833769 + 187635204 = 33613^2 + 13698^2 .

It is an emirp because it is prime and its reverse (3798647131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317468973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317468979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658734486 + 658734487.

It is an arithmetic number, because the mean of its divisors is an integer number (658734487).

Almost surely, 2^1317468973 is an apocalyptic number.

It is an amenable number.

1317468973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317468973 is an equidigital number, since it uses as much as digits as its factorization.

1317468973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 1317468973 is about 36296.9554232858. The cubic root of 1317468973 is about 1096.2597410059.

The spelling of 1317468973 in words is "one billion, three hundred seventeen million, four hundred sixty-eight thousand, nine hundred seventy-three".