1628822773 has 2 divisors, whose sum is σ = 1628822774. Its totient is φ = 1628822772.

The previous prime is 1628822771. The next prime is 1628822777. The reversal of 1628822773 is 3772288261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1409101444 + 219721329 = 37538^2 + 14823^2 .

It is a cyclic number.

It is not a de Polignac number, because 1628822773 - 2¹ = 1628822771 is a prime.

Together with 1628822771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1628822771) 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, 814411386 + 814411387.

It is an arithmetic number, because the mean of its divisors is an integer number (814411387).

Almost surely, 2^1628822773 is an apocalyptic number.

It is an amenable number.

1628822773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628822773 is an equidigital number, since it uses as much as digits as its factorization.

1628822773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 46.

The square root of 1628822773 is about 40358.6765516413. The cubic root of 1628822773 is about 1176.5885314966.

The spelling of 1628822773 in words is "one billion, six hundred twenty-eight million, eight hundred twenty-two thousand, seven hundred seventy-three".