2128208843 has 2 divisors, whose sum is σ = 2128208844. Its totient is φ = 2128208842.

The previous prime is 2128208821. The next prime is 2128208861. The reversal of 2128208843 is 3488028212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2128208843 - 2⁶ = 2128208779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2128208797 and 2128208806.

It is not a weakly prime, because it can be changed into another prime (2128208813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064104421 + 1064104422.

It is an arithmetic number, because the mean of its divisors is an integer number (1064104422).

Almost surely, 2^2128208843 is an apocalyptic number.

2128208843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128208843 is an equidigital number, since it uses as much as digits as its factorization.

2128208843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 2128208843 is about 46132.5139462397. The cubic root of 2128208843 is about 1286.2875944955.

The spelling of 2128208843 in words is "two billion, one hundred twenty-eight million, two hundred eight thousand, eight hundred forty-three".