2218907168 has 48 divisors (see below), whose sum is σ = 4500097560. Its totient is φ = 1076207616.

The previous prime is 2218907137. The next prime is 2218907183. The reversal of 2218907168 is 8617098122.

It can be written as a sum of positive squares in 4 ways, for example, as 1560882064 + 658025104 = 39508^2 + 25652^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415298 + ... + 420606.

Almost surely, 2^2218907168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2218907168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2250048780).

2218907168 is an abundant number, since it is smaller than the sum of its proper divisors (2281190392).

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

2218907168 is a wasteful number, since it uses less digits than its factorization.

2218907168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5709 (or 5701 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 2218907168 is about 47105.2774962636. The cubic root of 2218907168 is about 1304.3066575260.

The spelling of 2218907168 in words is "two billion, two hundred eighteen million, nine hundred seven thousand, one hundred sixty-eight".