4051819 has 2 divisors, whose sum is σ = 4051820. Its totient is φ = 4051818.

The previous prime is 4051813. The next prime is 4051829. The reversal of 4051819 is 9181504.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4051819 - 2¹⁷ = 3920747 is a prime.

It is a super-2 number, since 2×4051819² = 32834474417522, which contains 22 as substring.

It is a Chen prime.

4051819 is a lucky number.

It is equal to p₂₈₆₆₀₆ and since 4051819 and 286606 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (4051813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2025909 + 2025910.

It is an arithmetic number, because the mean of its divisors is an integer number (2025910).

Almost surely, 2^4051819 is an apocalyptic number.

4051819 is a deficient number, since it is larger than the sum of its proper divisors (1).

4051819 is an equidigital number, since it uses as much as digits as its factorization.

4051819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 4051819 is about 2012.9130631997. The cubic root of 4051819 is about 159.4226457060.

The spelling of 4051819 in words is "four million, fifty-one thousand, eight hundred nineteen".