838843496873 has 2 divisors, whose sum is σ = 838843496874. Its totient is φ = 838843496872.

The previous prime is 838843496789. The next prime is 838843496893. The reversal of 838843496873 is 378694348838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 773428784704 + 65414712169 = 879448^2 + 255763^2 .

It is a cyclic number.

It is not a de Polignac number, because 838843496873 - 2²² = 838839302569 is a prime.

It is a super-2 number, since 2×838843496873² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 838843496797 and 838843496806.

It is not a weakly prime, because it can be changed into another prime (838843496893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419421748436 + 419421748437.

It is an arithmetic number, because the mean of its divisors is an integer number (419421748437).

Almost surely, 2^838843496873 is an apocalyptic number.

It is an amenable number.

838843496873 is a deficient number, since it is larger than the sum of its proper divisors (1).

838843496873 is an equidigital number, since it uses as much as digits as its factorization.

838843496873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 668860416, while the sum is 71.

The spelling of 838843496873 in words is "eight hundred thirty-eight billion, eight hundred forty-three million, four hundred ninety-six thousand, eight hundred seventy-three".