1822766849 has 2 divisors, whose sum is σ = 1822766850. Its totient is φ = 1822766848.

The previous prime is 1822766839. The next prime is 1822766851. The reversal of 1822766849 is 9486672281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1255993600 + 566773249 = 35440^2 + 23807^2 .

It is an emirp because it is prime and its reverse (9486672281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1822766849 - 2⁴ = 1822766833 is a prime.

Together with 1822766851, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1822766849.

It is not a weakly prime, because it can be changed into another prime (1822766819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911383424 + 911383425.

It is an arithmetic number, because the mean of its divisors is an integer number (911383425).

Almost surely, 2^1822766849 is an apocalyptic number.

It is an amenable number.

1822766849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1822766849 is an equidigital number, since it uses as much as digits as its factorization.

1822766849 is an evil number, because the sum of its binary digits is even.

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

The square root of 1822766849 is about 42693.8736705865. The cubic root of 1822766849 is about 1221.5475409885.

The spelling of 1822766849 in words is "one billion, eight hundred twenty-two million, seven hundred sixty-six thousand, eight hundred forty-nine".