2108819 has 2 divisors, whose sum is σ = 2108820. Its totient is φ = 2108818.

The previous prime is 2108809. The next prime is 2108839. The reversal of 2108819 is 9188012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2108819 - 2¹² = 2104723 is a prime.

It is a super-2 number, since 2×2108819² = 8894235149522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2108791 and 2108800.

It is not a weakly prime, because it can be changed into another prime (2108809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054409 + 1054410.

It is an arithmetic number, because the mean of its divisors is an integer number (1054410).

2^2108819 is an apocalyptic number.

2108819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108819 is an equidigital number, since it uses as much as digits as its factorization.

2108819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 2108819 is about 1452.1773307692. The cubic root of 2108819 is about 128.2369269024.

The spelling of 2108819 in words is "two million, one hundred eight thousand, eight hundred nineteen".