2128219329 has 4 divisors (see below), whose sum is σ = 2837625776. Its totient is φ = 1418812884.

The previous prime is 2128219283. The next prime is 2128219363. The reversal of 2128219329 is 9239128212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2128219329 - 2⁹ = 2128218817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128219229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354703219 + ... + 354703224.

It is an arithmetic number, because the mean of its divisors is an integer number (709406444).

Almost surely, 2^2128219329 is an apocalyptic number.

It is an amenable number.

2128219329 is a deficient number, since it is larger than the sum of its proper divisors (709406447).

2128219329 is an equidigital number, since it uses as much as digits as its factorization.

2128219329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709406446.

The product of its digits is 31104, while the sum is 39.

The square root of 2128219329 is about 46132.6275969622. The cubic root of 2128219329 is about 1286.2897070685.

The spelling of 2128219329 in words is "two billion, one hundred twenty-eight million, two hundred nineteen thousand, three hundred twenty-nine".