2173648608 has 144 divisors (see below), whose sum is σ = 6434902656. Its totient is φ = 721768320.

The previous prime is 2173648601. The next prime is 2173648613. The reversal of 2173648608 is 8068463712.

2173648608 is a `hidden beast` number, since 2 + 1 + 7 + 36 + 4 + 8 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173648601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3444453 + ... + 3445083.

It is an arithmetic number, because the mean of its divisors is an integer number (44686824).

Almost surely, 2^2173648608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2173648608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3217451328).

2173648608 is an abundant number, since it is smaller than the sum of its proper divisors (4261254048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2173648608 is an equidigital number, since it uses as much as digits as its factorization.

2173648608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 2173648608 is about 46622.4045711930. The cubic root of 2173648608 is about 1295.3777877422.

The spelling of 2173648608 in words is "two billion, one hundred seventy-three million, six hundred forty-eight thousand, six hundred eight".