6849681401 has 2 divisors, whose sum is σ = 6849681402. Its totient is φ = 6849681400.

The previous prime is 6849681379. The next prime is 6849681413. The reversal of 6849681401 is 1041869486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6540765625 + 308915776 = 80875^2 + 17576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6849681401 is a prime.

It is not a weakly prime, because it can be changed into another prime (6849081401) 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 as a sum of consecutive naturals, namely, 3424840700 + 3424840701.

It is an arithmetic number, because the mean of its divisors is an integer number (3424840701).

Almost surely, 2^6849681401 is an apocalyptic number.

It is an amenable number.

6849681401 is a deficient number, since it is larger than the sum of its proper divisors (1).

6849681401 is an equidigital number, since it uses as much as digits as its factorization.

6849681401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 6849681401 is about 82762.8020369054. The cubic root of 6849681401 is about 1899.1391669203.

The spelling of 6849681401 in words is "six billion, eight hundred forty-nine million, six hundred eighty-one thousand, four hundred one".