2082811823 has 4 divisors (see below), whose sum is σ = 2086551720. Its totient is φ = 2079071928.

The previous prime is 2082811793. The next prime is 2082811859. The reversal of 2082811823 is 3281182802.

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 2082811823 - 2¹⁴ = 2082795439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2082411823) 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 in 3 ways as a sum of consecutive naturals, for example, 1869113 + ... + 1870226.

It is an arithmetic number, because the mean of its divisors is an integer number (521637930).

Almost surely, 2^2082811823 is an apocalyptic number.

2082811823 is a deficient number, since it is larger than the sum of its proper divisors (3739897).

2082811823 is an equidigital number, since it uses as much as digits as its factorization.

2082811823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3739896.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 2082811823 is about 45637.8332417305. The cubic root of 2082811823 is about 1277.0758082190.

The spelling of 2082811823 in words is "two billion, eighty-two million, eight hundred eleven thousand, eight hundred twenty-three".