6818842356 has 12 divisors (see below), whose sum is σ = 15910632192. Its totient is φ = 2272947448.

The previous prime is 6818842321. The next prime is 6818842403. The reversal of 6818842356 is 6532488186.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×6818842356² = 92993222151959261472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6818842299 and 6818842308.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 284118420 + ... + 284118443.

It is an arithmetic number, because the mean of its divisors is an integer number (1325886016).

Almost surely, 2^6818842356 is an apocalyptic number.

It is an amenable number.

6818842356 is an abundant number, since it is smaller than the sum of its proper divisors (9091789836).

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

6818842356 is a wasteful number, since it uses less digits than its factorization.

6818842356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568236870 (or 568236868 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The square root of 6818842356 is about 82576.2820427270. The cubic root of 6818842356 is about 1896.2847395447.

The spelling of 6818842356 in words is "six billion, eight hundred eighteen million, eight hundred forty-two thousand, three hundred fifty-six".