82144219 has 2 divisors, whose sum is σ = 82144220. Its totient is φ = 82144218.

The previous prime is 82144217. The next prime is 82144229. The reversal of 82144219 is 91244128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82144219 - 2¹ = 82144217 is a prime.

It is a super-2 number, since 2×82144219² = 13495345430239922, which contains 22 as substring.

Together with 82144217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (82144213) 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, 41072109 + 41072110.

It is an arithmetic number, because the mean of its divisors is an integer number (41072110).

Almost surely, 2^82144219 is an apocalyptic number.

82144219 is a deficient number, since it is larger than the sum of its proper divisors (1).

82144219 is an equidigital number, since it uses as much as digits as its factorization.

82144219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 82144219 is about 9063.3448020033. The cubic root of 82144219 is about 434.7026972806.

Subtracting 82144219 from its reverse (91244128), we obtain a palindrome (9099909).

The spelling of 82144219 in words is "eighty-two million, one hundred forty-four thousand, two hundred nineteen".