2218046408 has 12 divisors (see below), whose sum is σ = 4159086795. Its totient is φ = 1108956600.

The previous prime is 2218046407. The next prime is 2218046417. The reversal of 2218046408 is 8046408122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1109023204 + 1109023204 = 33302^2 + 33302^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33302.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2218046401) 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 2 ways as a sum of consecutive naturals, for example, 124883 + ... + 141533.

Almost surely, 2^2218046408 is an apocalyptic number.

It is an amenable number.

2218046408 is a deficient number, since it is larger than the sum of its proper divisors (1941040387).

2218046408 is an frugal number, since it uses more digits than its factorization.

2218046408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33308 (or 16653 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 2218046408 is about 47096.1400541488. The cubic root of 2218046408 is about 1304.1379798667.

The spelling of 2218046408 in words is "two billion, two hundred eighteen million, forty-six thousand, four hundred eight".