82438519 has 2 divisors, whose sum is σ = 82438520. Its totient is φ = 82438518.

The previous prime is 82438513. The next prime is 82438541. The reversal of 82438519 is 91583428.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82438519 - 2¹⁵ = 82405751 is a prime.

It is a super-2 number, since 2×82438519² = 13592218829826722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82438513) 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, 41219259 + 41219260.

It is an arithmetic number, because the mean of its divisors is an integer number (41219260).

Almost surely, 2^82438519 is an apocalyptic number.

82438519 is a deficient number, since it is larger than the sum of its proper divisors (1).

82438519 is an equidigital number, since it uses as much as digits as its factorization.

82438519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 82438519 is about 9079.5660138577. The cubic root of 82438519 is about 435.2212183479.

The spelling of 82438519 in words is "eighty-two million, four hundred thirty-eight thousand, five hundred nineteen".