1317639529 has 2 divisors, whose sum is σ = 1317639530. Its totient is φ = 1317639528.

The previous prime is 1317639517. The next prime is 1317639541. The reversal of 1317639529 is 9259367131.

It is a balanced prime because it is at equal distance from previous prime (1317639517) and next prime (1317639541).

It can be written as a sum of positive squares in only one way, i.e., 830995929 + 486643600 = 28827^2 + 22060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317639529 - 2¹⁷ = 1317508457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1317639599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658819764 + 658819765.

It is an arithmetic number, because the mean of its divisors is an integer number (658819765).

Almost surely, 2^1317639529 is an apocalyptic number.

It is an amenable number.

1317639529 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317639529 is an equidigital number, since it uses as much as digits as its factorization.

1317639529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 46.

The square root of 1317639529 is about 36299.3048005055. The cubic root of 1317639529 is about 1096.3070452466.

The spelling of 1317639529 in words is "one billion, three hundred seventeen million, six hundred thirty-nine thousand, five hundred twenty-nine".