6168858881 has 2 divisors, whose sum is σ = 6168858882. Its totient is φ = 6168858880.

The previous prime is 6168858853. The next prime is 6168858889. The reversal of 6168858881 is 1888588616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6055329856 + 113529025 = 77816^2 + 10655^2 .

It is a cyclic number.

It is not a de Polignac number, because 6168858881 - 2¹⁰ = 6168857857 is a prime.

It is a super-2 number, since 2×6168858881² = 76109639787385144322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6168858881.

It is not a weakly prime, because it can be changed into another prime (6168858889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3084429440 + 3084429441.

It is an arithmetic number, because the mean of its divisors is an integer number (3084429441).

Almost surely, 2^6168858881 is an apocalyptic number.

It is an amenable number.

6168858881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6168858881 is an equidigital number, since it uses as much as digits as its factorization.

6168858881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5898240, while the sum is 59.

The square root of 6168858881 is about 78542.0835030495. The cubic root of 6168858881 is about 1834.0096303327.

The spelling of 6168858881 in words is "six billion, one hundred sixty-eight million, eight hundred fifty-eight thousand, eight hundred eighty-one".