2218500001850 has 24 divisors (see below), whose sum is σ = 4501538186688. Its totient is φ = 806727273200.

The previous prime is 2218500001843. The next prime is 2218500001891. The reversal of 2218500001850 is 581000058122.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2016817634 + ... + 2016818733.

It is an arithmetic number, because the mean of its divisors is an integer number (187564091112).

Almost surely, 2^{2218500001850} is an apocalyptic number.

2218500001850 is an abundant number, since it is smaller than the sum of its proper divisors (2283038184838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2218500001850 is a wasteful number, since it uses less digits than its factorization.

2218500001850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033636390 (or 4033636385 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 32.

Adding to 2218500001850 its reverse (581000058122), we get a palindrome (2799500059972).

The spelling of 2218500001850 in words is "two trillion, two hundred eighteen billion, five hundred million, one thousand, eight hundred fifty".