82819871 has 2 divisors, whose sum is σ = 82819872. Its totient is φ = 82819870.

The previous prime is 82819859. The next prime is 82819907. The reversal of 82819871 is 17891828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82819871 - 2¹⁰ = 82818847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82819831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41409935 + 41409936.

It is an arithmetic number, because the mean of its divisors is an integer number (41409936).

Almost surely, 2^82819871 is an apocalyptic number.

82819871 is a deficient number, since it is larger than the sum of its proper divisors (1).

82819871 is an equidigital number, since it uses as much as digits as its factorization.

82819871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 44.

The square root of 82819871 is about 9100.5423464758. The cubic root of 82819871 is about 435.8912821965.

The spelling of 82819871 in words is "eighty-two million, eight hundred nineteen thousand, eight hundred seventy-one".