6871091693 has 2 divisors, whose sum is σ = 6871091694. Its totient is φ = 6871091692.

The previous prime is 6871091683. The next prime is 6871091707. The reversal of 6871091693 is 3961901786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6121810564 + 749281129 = 78242^2 + 27373^2 .

It is a cyclic number.

It is not a de Polignac number, because 6871091693 - 2³⁰ = 5797349869 is a prime.

It is a super-2 number, since 2×6871091693² = 94423802107227212498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6871091663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3435545846 + 3435545847.

It is an arithmetic number, because the mean of its divisors is an integer number (3435545847).

Almost surely, 2^6871091693 is an apocalyptic number.

It is an amenable number.

6871091693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6871091693 is an equidigital number, since it uses as much as digits as its factorization.

6871091693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 6871091693 is about 82892.0484304737. The cubic root of 6871091693 is about 1901.1158443667.

The spelling of 6871091693 in words is "six billion, eight hundred seventy-one million, ninety-one thousand, six hundred ninety-three".