2181835273 has 8 divisors (see below), whose sum is σ = 2258681600. Its totient is φ = 2105393040.

The previous prime is 2181835219. The next prime is 2181835289. The reversal of 2181835273 is 3725381812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2181835273 - 2⁹ = 2181834761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2181835973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90015 + ... + 111652.

It is an arithmetic number, because the mean of its divisors is an integer number (282335200).

Almost surely, 2^2181835273 is an apocalyptic number.

It is an amenable number.

2181835273 is a deficient number, since it is larger than the sum of its proper divisors (76846327).

2181835273 is a wasteful number, since it uses less digits than its factorization.

2181835273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202047.

The product of its digits is 80640, while the sum is 40.

The square root of 2181835273 is about 46710.1195995043. The cubic root of 2181835273 is about 1297.0020211488.

The spelling of 2181835273 in words is "two billion, one hundred eighty-one million, eight hundred thirty-five thousand, two hundred seventy-three".