2173573289 has 4 divisors (see below), whose sum is σ = 2209205700. Its totient is φ = 2137940880.

The previous prime is 2173573279. The next prime is 2173573291. The reversal of 2173573289 is 9823753712.

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 649842064 + 1523731225 = 25492^2 + 39035^2 .

It is a cyclic number.

It is not a de Polignac number, because 2173573289 - 2⁴ = 2173573273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173573249) 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, 17816114 + ... + 17816235.

It is an arithmetic number, because the mean of its divisors is an integer number (552301425).

Almost surely, 2^2173573289 is an apocalyptic number.

It is an amenable number.

2173573289 is a deficient number, since it is larger than the sum of its proper divisors (35632411).

2173573289 is an equidigital number, since it uses as much as digits as its factorization.

2173573289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35632410.

The product of its digits is 635040, while the sum is 47.

The square root of 2173573289 is about 46621.5968087752. The cubic root of 2173573289 is about 1295.3628255436.

The spelling of 2173573289 in words is "two billion, one hundred seventy-three million, five hundred seventy-three thousand, two hundred eighty-nine".