6838841749 has 2 divisors, whose sum is σ = 6838841750. Its totient is φ = 6838841748.

The previous prime is 6838841747. The next prime is 6838841767. The reversal of 6838841749 is 9471488386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6275491524 + 563350225 = 79218^2 + 23735^2 .

It is a cyclic number.

It is not a de Polignac number, because 6838841749 - 2¹ = 6838841747 is a prime.

Together with 6838841747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6838841693 and 6838841702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6838841747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3419420874 + 3419420875.

It is an arithmetic number, because the mean of its divisors is an integer number (3419420875).

Almost surely, 2^6838841749 is an apocalyptic number.

It is an amenable number.

6838841749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6838841749 is an equidigital number, since it uses as much as digits as its factorization.

6838841749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9289728, while the sum is 58.

The square root of 6838841749 is about 82697.2898528120. The cubic root of 6838841749 is about 1898.1368392123.

The spelling of 6838841749 in words is "six billion, eight hundred thirty-eight million, eight hundred forty-one thousand, seven hundred forty-nine".