82019471 has 2 divisors, whose sum is σ = 82019472. Its totient is φ = 82019470.

The previous prime is 82019429. The next prime is 82019477. The reversal of 82019471 is 17491028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82019471 - 2¹⁸ = 81757327 is a prime.

It is a super-3 number, since 3×82019471³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82019477) 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, 41009735 + 41009736.

It is an arithmetic number, because the mean of its divisors is an integer number (41009736).

Almost surely, 2^82019471 is an apocalyptic number.

82019471 is a deficient number, since it is larger than the sum of its proper divisors (1).

82019471 is an equidigital number, since it uses as much as digits as its factorization.

82019471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 82019471 is about 9056.4601804458. The cubic root of 82019471 is about 434.4825326031.

The spelling of 82019471 in words is "eighty-two million, nineteen thousand, four hundred seventy-one".