6891869123 has 2 divisors, whose sum is σ = 6891869124. Its totient is φ = 6891869122.

The previous prime is 6891869099. The next prime is 6891869141. The reversal of 6891869123 is 3219681986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6891869123 - 2¹⁰ = 6891868099 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6891869143) 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, 3445934561 + 3445934562.

It is an arithmetic number, because the mean of its divisors is an integer number (3445934562).

Almost surely, 2^6891869123 is an apocalyptic number.

6891869123 is a deficient number, since it is larger than the sum of its proper divisors (1).

6891869123 is an equidigital number, since it uses as much as digits as its factorization.

6891869123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 53.

The square root of 6891869123 is about 83017.2820742766. The cubic root of 6891869123 is about 1903.0301715716.

The spelling of 6891869123 in words is "six billion, eight hundred ninety-one million, eight hundred sixty-nine thousand, one hundred twenty-three".