2215730873 has 4 divisors (see below), whose sum is σ = 2230601700. Its totient is φ = 2200860048.

The previous prime is 2215730857. The next prime is 2215730911. The reversal of 2215730873 is 3780375122.

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 1331739049 + 883991824 = 36493^2 + 29732^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215730873 - 2⁴ = 2215730857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215730813) 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, 7435190 + ... + 7435487.

It is an arithmetic number, because the mean of its divisors is an integer number (557650425).

Almost surely, 2^2215730873 is an apocalyptic number.

It is an amenable number.

2215730873 is a deficient number, since it is larger than the sum of its proper divisors (14870827).

2215730873 is a wasteful number, since it uses less digits than its factorization.

2215730873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14870826.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 2215730873 is about 47071.5505693195. The cubic root of 2215730873 is about 1303.6840025031.

The spelling of 2215730873 in words is "two billion, two hundred fifteen million, seven hundred thirty thousand, eight hundred seventy-three".