1317180673 has 2 divisors, whose sum is σ = 1317180674. Its totient is φ = 1317180672.

The previous prime is 1317180647. The next prime is 1317180679. The reversal of 1317180673 is 3760817131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1300107249 + 17073424 = 36057^2 + 4132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317180673 - 2²¹ = 1315083521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1317180679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658590336 + 658590337.

It is an arithmetic number, because the mean of its divisors is an integer number (658590337).

Almost surely, 2^1317180673 is an apocalyptic number.

It is an amenable number.

1317180673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317180673 is an equidigital number, since it uses as much as digits as its factorization.

1317180673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 1317180673 is about 36292.9837985250. The cubic root of 1317180673 is about 1096.1797708139.

The spelling of 1317180673 in words is "one billion, three hundred seventeen million, one hundred eighty thousand, six hundred seventy-three".