82018513 has 2 divisors, whose sum is σ = 82018514. Its totient is φ = 82018512.

The previous prime is 82018499. The next prime is 82018537. The reversal of 82018513 is 31581028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58476609 + 23541904 = 7647^2 + 4852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82018513 is a prime.

It is not a weakly prime, because it can be changed into another prime (82018553) 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, 41009256 + 41009257.

It is an arithmetic number, because the mean of its divisors is an integer number (41009257).

Almost surely, 2^82018513 is an apocalyptic number.

It is an amenable number.

82018513 is a deficient number, since it is larger than the sum of its proper divisors (1).

82018513 is an equidigital number, since it uses as much as digits as its factorization.

82018513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 82018513 is about 9056.4072898694. The cubic root of 82018513 is about 434.4808409889.

The spelling of 82018513 in words is "eighty-two million, eighteen thousand, five hundred thirteen".