82381379 has 2 divisors, whose sum is σ = 82381380. Its totient is φ = 82381378.

The previous prime is 82381367. The next prime is 82381381. The reversal of 82381379 is 97318328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82381379 - 2²⁴ = 65604163 is a prime.

Together with 82381381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82381319) 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, 41190689 + 41190690.

It is an arithmetic number, because the mean of its divisors is an integer number (41190690).

Almost surely, 2^82381379 is an apocalyptic number.

82381379 is a deficient number, since it is larger than the sum of its proper divisors (1).

82381379 is an equidigital number, since it uses as much as digits as its factorization.

82381379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 82381379 is about 9076.4188422527. The cubic root of 82381379 is about 435.1206412206.

The spelling of 82381379 in words is "eighty-two million, three hundred eighty-one thousand, three hundred seventy-nine".