2128895971 has 2 divisors, whose sum is σ = 2128895972. Its totient is φ = 2128895970.

The previous prime is 2128895963. The next prime is 2128896001. The reversal of 2128895971 is 1795988212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2128895971 - 2³ = 2128895963 is a prime.

It is not a weakly prime, because it can be changed into another prime (2128895911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064447985 + 1064447986.

It is an arithmetic number, because the mean of its divisors is an integer number (1064447986).

Almost surely, 2^2128895971 is an apocalyptic number.

2128895971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128895971 is an equidigital number, since it uses as much as digits as its factorization.

2128895971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 52.

The square root of 2128895971 is about 46139.9606740188. The cubic root of 2128895971 is about 1286.4260127904.

The spelling of 2128895971 in words is "two billion, one hundred twenty-eight million, eight hundred ninety-five thousand, nine hundred seventy-one".