2128584791 has 2 divisors, whose sum is σ = 2128584792. Its totient is φ = 2128584790.

The previous prime is 2128584743. The next prime is 2128584847. The reversal of 2128584791 is 1974858212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2128584791 - 2⁶ = 2128584727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2128584721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064292395 + 1064292396.

It is an arithmetic number, because the mean of its divisors is an integer number (1064292396).

Almost surely, 2^2128584791 is an apocalyptic number.

2128584791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128584791 is an equidigital number, since it uses as much as digits as its factorization.

2128584791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 47.

The square root of 2128584791 is about 46136.5884196047. The cubic root of 2128584791 is about 1286.3633309187.

The spelling of 2128584791 in words is "two billion, one hundred twenty-eight million, five hundred eighty-four thousand, seven hundred ninety-one".