18882513317 has 2 divisors, whose sum is σ = 18882513318. Its totient is φ = 18882513316.

The previous prime is 18882513311. The next prime is 18882513337. The reversal of 18882513317 is 71331528881.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17058710881 + 1823802436 = 130609^2 + 42706^2 .

It is a cyclic number.

It is not a de Polignac number, because 18882513317 - 2⁴ = 18882513301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18882513311) 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, 9441256658 + 9441256659.

It is an arithmetic number, because the mean of its divisors is an integer number (9441256659).

Almost surely, 2^18882513317 is an apocalyptic number.

It is an amenable number.

18882513317 is a deficient number, since it is larger than the sum of its proper divisors (1).

18882513317 is an equidigital number, since it uses as much as digits as its factorization.

18882513317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 47.

The spelling of 18882513317 in words is "eighteen billion, eight hundred eighty-two million, five hundred thirteen thousand, three hundred seventeen".