1318711501 has 2 divisors, whose sum is σ = 1318711502. Its totient is φ = 1318711500.

The previous prime is 1318711489. The next prime is 1318711517. The reversal of 1318711501 is 1051178131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1216195876 + 102515625 = 34874^2 + 10125^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318711501 - 2⁹ = 1318710989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1318711501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318711531) 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 as a sum of consecutive naturals, namely, 659355750 + 659355751.

It is an arithmetic number, because the mean of its divisors is an integer number (659355751).

Almost surely, 2^1318711501 is an apocalyptic number.

It is an amenable number.

1318711501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318711501 is an equidigital number, since it uses as much as digits as its factorization.

1318711501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 28.

The square root of 1318711501 is about 36314.0675358738. The cubic root of 1318711501 is about 1096.6042666224.

Adding to 1318711501 its reverse (1051178131), we get a palindrome (2369889632).

The spelling of 1318711501 in words is "one billion, three hundred eighteen million, seven hundred eleven thousand, five hundred one".