6838961729 has 2 divisors, whose sum is σ = 6838961730. Its totient is φ = 6838961728.

The previous prime is 6838961719. The next prime is 6838961737. The reversal of 6838961729 is 9271698386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5987664400 + 851297329 = 77380^2 + 29177^2 .

It is a cyclic number.

It is not a de Polignac number, because 6838961729 - 2⁴ = 6838961713 is a prime.

It is not a weakly prime, because it can be changed into another prime (6838961719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3419480864 + 3419480865.

It is an arithmetic number, because the mean of its divisors is an integer number (3419480865).

Almost surely, 2^6838961729 is an apocalyptic number.

It is an amenable number.

6838961729 is a deficient number, since it is larger than the sum of its proper divisors (1).

6838961729 is an equidigital number, since it uses as much as digits as its factorization.

6838961729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 59.

The square root of 6838961729 is about 82698.0152663896. The cubic root of 6838961729 is about 1898.1479393925.

The spelling of 6838961729 in words is "six billion, eight hundred thirty-eight million, nine hundred sixty-one thousand, seven hundred twenty-nine".