2218116546 has 12 divisors (see below), whose sum is σ = 4805919222. Its totient is φ = 739372176.

The previous prime is 2218116529. The next prime is 2218116569. The reversal of 2218116546 is 6456118122.

It is a happy number.

2218116546 is a `hidden beast` number, since 2 + 21 + 81 + 16 + 546 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2172026025 + 46090521 = 46605^2 + 6789^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2218116546.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 61614331 + ... + 61614366.

Almost surely, 2^2218116546 is an apocalyptic number.

2218116546 is an abundant number, since it is smaller than the sum of its proper divisors (2587802676).

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

2218116546 is a wasteful number, since it uses less digits than its factorization.

2218116546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123228705 (or 123228702 counting only the distinct ones).

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

The square root of 2218116546 is about 47096.8846740419. The cubic root of 2218116546 is about 1304.1517259971.

The spelling of 2218116546 in words is "two billion, two hundred eighteen million, one hundred sixteen thousand, five hundred forty-six".