2128419187 has 2 divisors, whose sum is σ = 2128419188. Its totient is φ = 2128419186.

The previous prime is 2128419179. The next prime is 2128419233. The reversal of 2128419187 is 7819148212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2128419187 - 2³ = 2128419179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2128414187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064209593 + 1064209594.

It is an arithmetic number, because the mean of its divisors is an integer number (1064209594).

Almost surely, 2^2128419187 is an apocalyptic number.

2128419187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2128419187 is an equidigital number, since it uses as much as digits as its factorization.

2128419187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 43.

The square root of 2128419187 is about 46134.7936702875. The cubic root of 2128419187 is about 1286.3299703437.

The spelling of 2128419187 in words is "two billion, one hundred twenty-eight million, four hundred nineteen thousand, one hundred eighty-seven".