2172363605 has 4 divisors (see below), whose sum is σ = 2606836332. Its totient is φ = 1737890880.

The previous prime is 2172363587. The next prime is 2172363607. The reversal of 2172363605 is 5063632712.

2172363605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1019014084 + 1153349521 = 31922^2 + 33961^2 .

It is not a de Polignac number, because 2172363605 - 2¹⁶ = 2172298069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172363607) 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, 217236356 + ... + 217236365.

It is an arithmetic number, because the mean of its divisors is an integer number (651709083).

Almost surely, 2^2172363605 is an apocalyptic number.

It is an amenable number.

2172363605 is a deficient number, since it is larger than the sum of its proper divisors (434472727).

2172363605 is an equidigital number, since it uses as much as digits as its factorization.

2172363605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434472726.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 2172363605 is about 46608.6215736960. The cubic root of 2172363605 is about 1295.1224731741.

The spelling of 2172363605 in words is "two billion, one hundred seventy-two million, three hundred sixty-three thousand, six hundred five".