7844066819 has 2 divisors, whose sum is σ = 7844066820. Its totient is φ = 7844066818.

The previous prime is 7844066753. The next prime is 7844066903. The reversal of 7844066819 is 9186604487.

It is a weak prime.

It is an emirp because it is prime and its reverse (9186604487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7844066819 - 2²⁰ = 7843018243 is a prime.

It is a super-2 number, since 2×7844066819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9844066819) 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, 3922033409 + 3922033410.

It is an arithmetic number, because the mean of its divisors is an integer number (3922033410).

Almost surely, 2^7844066819 is an apocalyptic number.

7844066819 is a deficient number, since it is larger than the sum of its proper divisors (1).

7844066819 is an equidigital number, since it uses as much as digits as its factorization.

7844066819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 7844066819 is about 88566.7365267570. The cubic root of 7844066819 is about 1986.9202143284.

The spelling of 7844066819 in words is "seven billion, eight hundred forty-four million, sixty-six thousand, eight hundred nineteen".