2218941450 has 144 divisors (see below), whose sum is σ = 6562722816. Its totient is φ = 533030400.

The previous prime is 2218941433. The next prime is 2218941451. The reversal of 2218941450 is 541498122.

2218941450 is a `hidden beast` number, since 22 + 189 + 4 + 1 + 450 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218941451) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 557367 + ... + 561333.

It is an arithmetic number, because the mean of its divisors is an integer number (45574464).

Almost surely, 2^2218941450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2218941450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3281361408).

2218941450 is an abundant number, since it is smaller than the sum of its proper divisors (4343781366).

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

2218941450 is a wasteful number, since it uses less digits than its factorization.

2218941450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 2218941450 is about 47105.6413818982. The cubic root of 2218941450 is about 1304.3133746480.

The spelling of 2218941450 in words is "two billion, two hundred eighteen million, nine hundred forty-one thousand, four hundred fifty".