822923902418 has 6 divisors (see below), whose sum is σ = 1234387777989. Its totient is φ = 411461309756.

The previous prime is 822923902417. The next prime is 822923902421. The reversal of 822923902418 is 814209329228.

It can be written as a sum of positive squares in 2 ways, for example, as 726188595889 + 96735306529 = 852167^2 + 311023^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=641453.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (822923902417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 962180 + ... + 1603632.

Almost surely, 2^822923902418 is an apocalyptic number.

822923902418 is a deficient number, since it is larger than the sum of its proper divisors (411463875571).

822923902418 is an frugal number, since it uses more digits than its factorization.

822923902418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282908 (or 641455 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

Multiplying 822923902418 by its sum of digits (50), we get a square (41146195120900 = 6414530²).

The spelling of 822923902418 in words is "eight hundred twenty-two billion, nine hundred twenty-three million, nine hundred two thousand, four hundred eighteen".