6823936981 has 2 divisors, whose sum is σ = 6823936982. Its totient is φ = 6823936980.

The previous prime is 6823936943. The next prime is 6823937051. The reversal of 6823936981 is 1896393286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3774136356 + 3049800625 = 61434^2 + 55225^2 .

It is a cyclic number.

It is not a de Polignac number, because 6823936981 - 2⁷ = 6823936853 is a prime.

It is a super-2 number, since 2×6823936981² = 93132231841318788722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6823936081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3411968490 + 3411968491.

It is an arithmetic number, because the mean of its divisors is an integer number (3411968491).

Almost surely, 2^6823936981 is an apocalyptic number.

It is an amenable number.

6823936981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6823936981 is an equidigital number, since it uses as much as digits as its factorization.

6823936981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 55.

The square root of 6823936981 is about 82607.1242750890. The cubic root of 6823936981 is about 1896.7568849193.

The spelling of 6823936981 in words is "six billion, eight hundred twenty-three million, nine hundred thirty-six thousand, nine hundred eighty-one".