2128491219 has 16 divisors (see below), whose sum is σ = 2861199360. Its totient is φ = 1407436800.

The previous prime is 2128491191. The next prime is 2128491229. The reversal of 2128491219 is 9121948212.

It is not a de Polignac number, because 2128491219 - 2⁷ = 2128491091 is a prime.

It is a super-2 number, since 2×2128491219² = 9060949738720211922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2128491229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178494 + ... + 190044.

It is an arithmetic number, because the mean of its divisors is an integer number (178824960).

Almost surely, 2^2128491219 is an apocalyptic number.

2128491219 is a deficient number, since it is larger than the sum of its proper divisors (732708141).

2128491219 is a wasteful number, since it uses less digits than its factorization.

2128491219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12050.

The product of its digits is 20736, while the sum is 39.

The square root of 2128491219 is about 46135.5743326124. The cubic root of 2128491219 is about 1286.3444812501.

The spelling of 2128491219 in words is "two billion, one hundred twenty-eight million, four hundred ninety-one thousand, two hundred nineteen".