2128866895 has 8 divisors (see below), whose sum is σ = 2561013360. Its totient is φ = 1698844800.

The previous prime is 2128866881. The next prime is 2128866899. The reversal of 2128866895 is 5986688212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2128866895 - 2⁵ = 2128866863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128866899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528885 + ... + 532894.

It is an arithmetic number, because the mean of its divisors is an integer number (320126670).

Almost surely, 2^2128866895 is an apocalyptic number.

2128866895 is a deficient number, since it is larger than the sum of its proper divisors (432146465).

2128866895 is a wasteful number, since it uses less digits than its factorization.

2128866895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062185.

The product of its digits is 3317760, while the sum is 55.

The square root of 2128866895 is about 46139.6455881490. The cubic root of 2128866895 is about 1286.4201561878.

The spelling of 2128866895 in words is "two billion, one hundred twenty-eight million, eight hundred sixty-six thousand, eight hundred ninety-five".