2218866871 has 8 divisors (see below), whose sum is σ = 2393846784. Its totient is φ = 2044500960.

The previous prime is 2218866827. The next prime is 2218866913. The reversal of 2218866871 is 1786688122.

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 2218866871 - 2²¹ = 2216769719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218866271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145975 + ... + 160456.

It is an arithmetic number, because the mean of its divisors is an integer number (299230848).

Almost surely, 2^2218866871 is an apocalyptic number.

2218866871 is a deficient number, since it is larger than the sum of its proper divisors (174979913).

2218866871 is a wasteful number, since it uses less digits than its factorization.

2218866871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307001.

The product of its digits is 516096, while the sum is 49.

The square root of 2218866871 is about 47104.8497609323. The cubic root of 2218866871 is about 1304.2987617528.

The spelling of 2218866871 in words is "two billion, two hundred eighteen million, eight hundred sixty-six thousand, eight hundred seventy-one".