2112809833 has 4 divisors (see below), whose sum is σ = 2113656448. Its totient is φ = 2111963220.

The previous prime is 2112809821. The next prime is 2112809837. The reversal of 2112809833 is 3389082112.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112809833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112809792 and 2112809801.

It is not an unprimeable number, because it can be changed into a prime (2112809837) 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, 419553 + ... + 424558.

It is an arithmetic number, because the mean of its divisors is an integer number (528414112).

Almost surely, 2^2112809833 is an apocalyptic number.

It is an amenable number.

2112809833 is a deficient number, since it is larger than the sum of its proper divisors (846615).

2112809833 is an equidigital number, since it uses as much as digits as its factorization.

2112809833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846614.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 2112809833 is about 45965.3111922458. The cubic root of 2112809833 is about 1283.1776988678.

The spelling of 2112809833 in words is "two billion, one hundred twelve million, eight hundred nine thousand, eight hundred thirty-three".