2218312833 has 16 divisors (see below), whose sum is σ = 3396460800. Its totient is φ = 1273672080.

The previous prime is 2218312801. The next prime is 2218312843. The reversal of 2218312833 is 3382138122.

It is not a de Polignac number, because 2218312833 - 2⁵ = 2218312801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 2218312794 and 2218312803.

It is not an unprimeable number, because it can be changed into a prime (2218312843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1768363 + ... + 1769616.

It is an arithmetic number, because the mean of its divisors is an integer number (212278800).

Almost surely, 2^2218312833 is an apocalyptic number.

It is an amenable number.

2218312833 is a deficient number, since it is larger than the sum of its proper divisors (1178147967).

2218312833 is a wasteful number, since it uses less digits than its factorization.

2218312833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538012.

The product of its digits is 13824, while the sum is 33.

The square root of 2218312833 is about 47098.9684918895. The cubic root of 2218312833 is about 1304.1901941410.

The spelling of 2218312833 in words is "two billion, two hundred eighteen million, three hundred twelve thousand, eight hundred thirty-three".