2218468549 has 8 divisors (see below), whose sum is σ = 2479176000. Its totient is φ = 1967599200.

The previous prime is 2218468547. The next prime is 2218468583. The reversal of 2218468549 is 9458648122.

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 2218468549 - 2¹ = 2218468547 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 (2218468543) 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, 2459049 + ... + 2459950.

It is an arithmetic number, because the mean of its divisors is an integer number (309897000).

Almost surely, 2^2218468549 is an apocalyptic number.

It is an amenable number.

2218468549 is a deficient number, since it is larger than the sum of its proper divisors (260707451).

2218468549 is a wasteful number, since it uses less digits than its factorization.

2218468549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919051.

The product of its digits is 1105920, while the sum is 49.

The square root of 2218468549 is about 47100.6215351772. The cubic root of 2218468549 is about 1304.2207096038.

The spelling of 2218468549 in words is "two billion, two hundred eighteen million, four hundred sixty-eight thousand, five hundred forty-nine".