822491838 has 48 divisors (see below), whose sum is σ = 2038414560. Its totient is φ = 234793728.

The previous prime is 822491827. The next prime is 822491843. The reversal of 822491838 is 838194228.

822491838 is a `hidden beast` number, since 82 + 2 + 491 + 83 + 8 = 666.

822491838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 822491793 and 822491802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200706 + ... + 204762.

It is an arithmetic number, because the mean of its divisors is an integer number (42466970).

Almost surely, 2^822491838 is an apocalyptic number.

822491838 is an abundant number, since it is smaller than the sum of its proper divisors (1215922722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

822491838 is a wasteful number, since it uses less digits than its factorization.

822491838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681 (or 5678 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 822491838 is about 28679.1185010976. The cubic root of 822491838 is about 936.9373075633.

The spelling of 822491838 in words is "eight hundred twenty-two million, four hundred ninety-one thousand, eight hundred thirty-eight".