19982713 has 2 divisors, whose sum is σ = 19982714. Its totient is φ = 19982712.

The previous prime is 19982707. The next prime is 19982731. The reversal of 19982713 is 31728991.

Together with next prime (19982731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19820304 + 162409 = 4452^2 + 403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19982713 is a prime.

It is not a weakly prime, because it can be changed into another prime (19982773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991356 + 9991357.

It is an arithmetic number, because the mean of its divisors is an integer number (9991357).

Almost surely, 2^19982713 is an apocalyptic number.

It is an amenable number.

19982713 is a deficient number, since it is larger than the sum of its proper divisors (1).

19982713 is an equidigital number, since it uses as much as digits as its factorization.

19982713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 40.

The square root of 19982713 is about 4470.2027918205. The cubic root of 19982713 is about 271.3635322204.

The spelling of 19982713 in words is "nineteen million, nine hundred eighty-two thousand, seven hundred thirteen".