2175680393 has 4 divisors (see below), whose sum is σ = 2205484308. Its totient is φ = 2145876480.

The previous prime is 2175680359. The next prime is 2175680399. The reversal of 2175680393 is 3930865712.

2175680393 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 1673382649 + 502297744 = 40907^2 + 22412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2175680393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2175680399) 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, 14901848 + ... + 14901993.

It is an arithmetic number, because the mean of its divisors is an integer number (551371077).

Almost surely, 2^2175680393 is an apocalyptic number.

It is an amenable number.

2175680393 is a deficient number, since it is larger than the sum of its proper divisors (29803915).

2175680393 is an equidigital number, since it uses as much as digits as its factorization.

2175680393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29803914.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 2175680393 is about 46644.1892736920. The cubic root of 2175680393 is about 1295.7812736173.

The spelling of 2175680393 in words is "two billion, one hundred seventy-five million, six hundred eighty thousand, three hundred ninety-three".