2218726944 has 96 divisors (see below), whose sum is σ = 7395776640. Its totient is φ = 633920256.

The previous prime is 2218726921. The next prime is 2218726949. The reversal of 2218726944 is 4496278122.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2218726944.

It is not an unprimeable number, because it can be changed into a prime (2218726949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177379 + ... + 189474.

It is an arithmetic number, because the mean of its divisors is an integer number (77039340).

Almost surely, 2^2218726944 is an apocalyptic number.

2218726944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2218726944 is an abundant number, since it is smaller than the sum of its proper divisors (5177049696).

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

2218726944 is a wasteful number, since it uses less digits than its factorization.

2218726944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366879 (or 366865 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 2218726944 is about 47103.3644658213. The cubic root of 2218726944 is about 1304.2713437867.

The spelling of 2218726944 in words is "two billion, two hundred eighteen million, seven hundred twenty-six thousand, nine hundred forty-four".