82184819 has 4 divisors (see below), whose sum is σ = 85758096. Its totient is φ = 78611544.

The previous prime is 82184803. The next prime is 82184827. The reversal of 82184819 is 91848128.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82184819 - 2⁴ = 82184803 is a prime.

It is a super-2 number, since 2×82184819² = 13508688948125522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82184719) 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 in 3 ways as a sum of consecutive naturals, for example, 1786604 + ... + 1786649.

It is an arithmetic number, because the mean of its divisors is an integer number (21439524).

Almost surely, 2^82184819 is an apocalyptic number.

82184819 is a deficient number, since it is larger than the sum of its proper divisors (3573277).

82184819 is a wasteful number, since it uses less digits than its factorization.

82184819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573276.

The product of its digits is 36864, while the sum is 41.

The square root of 82184819 is about 9065.5843165237. The cubic root of 82184819 is about 434.7743031418.

The spelling of 82184819 in words is "eighty-two million, one hundred eighty-four thousand, eight hundred nineteen".