2878232173 has 4 divisors (see below), whose sum is σ = 2896565020. Its totient is φ = 2859899328.

The previous prime is 2878232171. The next prime is 2878232207. The reversal of 2878232173 is 3712328782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3712328782 = 2 ⋅1856164391.

It can be written as a sum of positive squares in 2 ways, for example, as 272844324 + 2605387849 = 16518^2 + 51043^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878232173 - 2¹ = 2878232171 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 (2878232171) 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, 9166188 + ... + 9166501.

It is an arithmetic number, because the mean of its divisors is an integer number (724141255).

Almost surely, 2^2878232173 is an apocalyptic number.

It is an amenable number.

2878232173 is a deficient number, since it is larger than the sum of its proper divisors (18332847).

2878232173 is a wasteful number, since it uses less digits than its factorization.

2878232173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18332846.

The product of its digits is 225792, while the sum is 43.

The square root of 2878232173 is about 53649.1581760609. The cubic root of 2878232173 is about 1422.4661523961.

The spelling of 2878232173 in words is "two billion, eight hundred seventy-eight million, two hundred thirty-two thousand, one hundred seventy-three".