1022821853 has 2 divisors, whose sum is σ = 1022821854. Its totient is φ = 1022821852.

The previous prime is 1022821801. The next prime is 1022821901. The reversal of 1022821853 is 3581282201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 947531524 + 75290329 = 30782^2 + 8677^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022821853 - 2¹⁰ = 1022820829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322821853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511410926 + 511410927.

It is an arithmetic number, because the mean of its divisors is an integer number (511410927).

Almost surely, 2^1022821853 is an apocalyptic number.

It is an amenable number.

1022821853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022821853 is an equidigital number, since it uses as much as digits as its factorization.

1022821853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 1022821853 is about 31981.5861551612. The cubic root of 1022821853 is about 1007.5501363110.

The spelling of 1022821853 in words is "one billion, twenty-two million, eight hundred twenty-one thousand, eight hundred fifty-three".