2868126861 has 16 divisors (see below), whose sum is σ = 3853209600. Its totient is φ = 1897612080.

The previous prime is 2868126847. The next prime is 2868126869. The reversal of 2868126861 is 1686218682.

It is a happy number.

It is not a de Polignac number, because 2868126861 - 2²⁶ = 2801017997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2868126861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2868126869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248190 + ... + 259488.

It is an arithmetic number, because the mean of its divisors is an integer number (240825600).

Almost surely, 2^2868126861 is an apocalyptic number.

It is an amenable number.

2868126861 is a deficient number, since it is larger than the sum of its proper divisors (985082739).

2868126861 is a wasteful number, since it uses less digits than its factorization.

2868126861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11936.

The product of its digits is 442368, while the sum is 48.

The square root of 2868126861 is about 53554.8957706016. The cubic root of 2868126861 is about 1420.7994673211.

The spelling of 2868126861 in words is "two billion, eight hundred sixty-eight million, one hundred twenty-six thousand, eight hundred sixty-one".