2163873 has 4 divisors (see below), whose sum is σ = 2885168. Its totient is φ = 1442580.

The previous prime is 2163869. The next prime is 2163881. The reversal of 2163873 is 3783612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2163873 - 2² = 2163869 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2163873.

It is not an unprimeable number, because it can be changed into a prime (2163823) 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, 360643 + ... + 360648.

It is an arithmetic number, because the mean of its divisors is an integer number (721292).

2^2163873 is an apocalyptic number.

It is an amenable number.

2163873 is a deficient number, since it is larger than the sum of its proper divisors (721295).

2163873 is an equidigital number, since it uses as much as digits as its factorization.

2163873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721294.

The product of its digits is 6048, while the sum is 30.

The square root of 2163873 is about 1471.0108769142. The cubic root of 2163873 is about 129.3432956922.

The spelling of 2163873 in words is "two million, one hundred sixty-three thousand, eight hundred seventy-three".