2216546609 has 4 divisors (see below), whose sum is σ = 2217589860. Its totient is φ = 2215503360.

The previous prime is 2216546573. The next prime is 2216546627. The reversal of 2216546609 is 9066456122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 399400225 + 1817146384 = 19985^2 + 42628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2216546609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2216546659) 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 3 ways as a sum of consecutive naturals, for example, 518432 + ... + 522689.

It is an arithmetic number, because the mean of its divisors is an integer number (554397465).

Almost surely, 2^2216546609 is an apocalyptic number.

It is an amenable number.

2216546609 is a deficient number, since it is larger than the sum of its proper divisors (1043251).

2216546609 is a wasteful number, since it uses less digits than its factorization.

2216546609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043250.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 2216546609 is about 47080.2146235550. The cubic root of 2216546609 is about 1303.8439695079.

The spelling of 2216546609 in words is "two billion, two hundred sixteen million, five hundred forty-six thousand, six hundred nine".