2173628089 has 4 divisors (see below), whose sum is σ = 2196036724. Its totient is φ = 2151219456.

The previous prime is 2173628081. The next prime is 2173628099. The reversal of 2173628089 is 9808263712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1606807225 + 566820864 = 40085^2 + 23808^2 .

It is a cyclic number.

It is not a de Polignac number, because 2173628089 - 2³ = 2173628081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173628081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11204172 + ... + 11204365.

It is an arithmetic number, because the mean of its divisors is an integer number (549009181).

Almost surely, 2^2173628089 is an apocalyptic number.

It is an amenable number.

2173628089 is a deficient number, since it is larger than the sum of its proper divisors (22408635).

2173628089 is an equidigital number, since it uses as much as digits as its factorization.

2173628089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22408634.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2173628089 is about 46622.1845155287. The cubic root of 2173628089 is about 1295.3737116555.

The spelling of 2173628089 in words is "two billion, one hundred seventy-three million, six hundred twenty-eight thousand, eighty-nine".