2981819 has 2 divisors, whose sum is σ = 2981820. Its totient is φ = 2981818.

The previous prime is 2981779. The next prime is 2981827. The reversal of 2981819 is 9181892.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2981819 - 2¹⁶ = 2916283 is a prime.

It is a super-2 number, since 2×2981819² = 17782489097522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2981899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1490909 + 1490910.

It is an arithmetic number, because the mean of its divisors is an integer number (1490910).

2^2981819 is an apocalyptic number.

2981819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2981819 is an equidigital number, since it uses as much as digits as its factorization.

2981819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 38.

The square root of 2981819 is about 1726.7944289926. The cubic root of 2981819 is about 143.9330160426.

The spelling of 2981819 in words is "two million, nine hundred eighty-one thousand, eight hundred nineteen".