822081811 has 8 divisors (see below), whose sum is σ = 837304544. Its totient is φ = 806915520.

The previous prime is 822081803. The next prime is 822081853. The reversal of 822081811 is 118180228.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 822081811 - 2³ = 822081803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (822081881) 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 in 7 ways as a sum of consecutive naturals, for example, 15871 + ... + 43543.

It is an arithmetic number, because the mean of its divisors is an integer number (104663068).

Almost surely, 2^822081811 is an apocalyptic number.

822081811 is a deficient number, since it is larger than the sum of its proper divisors (15222733).

822081811 is a wasteful number, since it uses less digits than its factorization.

822081811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28221.

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 822081811 is about 28671.9690813170. The cubic root of 822081811 is about 936.7815883079.

The spelling of 822081811 in words is "eight hundred twenty-two million, eighty-one thousand, eight hundred eleven".