4518728566 has 16 divisors (see below), whose sum is σ = 7400092608. Its totient is φ = 2052353800.

The previous prime is 4518728549. The next prime is 4518728581. The reversal of 4518728566 is 6658278154.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51820 + ... + 108271.

It is an arithmetic number, because the mean of its divisors is an integer number (462505788).

Almost surely, 2^4518728566 is an apocalyptic number.

4518728566 is a deficient number, since it is larger than the sum of its proper divisors (2881364042).

4518728566 is a wasteful number, since it uses less digits than its factorization.

4518728566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161387.

The product of its digits is 3225600, while the sum is 52.

The square root of 4518728566 is about 67221.4888707473. The cubic root of 4518728566 is about 1653.2508381145.

The spelling of 4518728566 in words is "four billion, five hundred eighteen million, seven hundred twenty-eight thousand, five hundred sixty-six".