2128999608 has 48 divisors (see below), whose sum is σ = 5888731680. Its totient is φ = 694566144.

The previous prime is 2128999603. The next prime is 2128999619. The reversal of 2128999608 is 8069998212.

2128999608 is a `hidden beast` number, since 2 + 1 + 28 + 9 + 9 + 9 + 608 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128999603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311185 + ... + 317952.

It is an arithmetic number, because the mean of its divisors is an integer number (122681910).

Almost surely, 2^2128999608 is an apocalyptic number.

It is an amenable number.

2128999608 is an abundant number, since it is smaller than the sum of its proper divisors (3759732072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2128999608 is a wasteful number, since it uses less digits than its factorization.

2128999608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629196 (or 629189 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 2128999608 is about 46141.0837323962. The cubic root of 2128999608 is about 1286.4468873300.

The spelling of 2128999608 in words is "two billion, one hundred twenty-eight million, nine hundred ninety-nine thousand, six hundred eight".