2005919 has 2 divisors, whose sum is σ = 2005920. Its totient is φ = 2005918.

The previous prime is 2005903. The next prime is 2005931. The reversal of 2005919 is 9195002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2005919 - 2⁴ = 2005903 is a prime.

It is a super-2 number, since 2×2005919² = 8047422069122, which contains 22 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 (2005019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002959 + 1002960.

It is an arithmetic number, because the mean of its divisors is an integer number (1002960).

2^2005919 is an apocalyptic number.

2005919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005919 is an equidigital number, since it uses as much as digits as its factorization.

2005919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 2005919 is about 1416.3046988554. The cubic root of 2005919 is about 126.1162737890.

The spelling of 2005919 in words is "two million, five thousand, nine hundred nineteen".