4518125089 has 3 divisors (see below), whose sum is σ = 4518192307. Its totient is φ = 4518057872.

The previous prime is 4518125081. The next prime is 4518125099. The reversal of 4518125089 is 9805218154.

The square root of 4518125089 is 67217.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9805218154 = 2 ⋅4902609077.

It can be written as a sum of positive squares in only one way, i.e., 4077461025 + 440664064 = 63855^2 + 20992^2 .

It is not a de Polignac number, because 4518125089 - 2³ = 4518125081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4518125081) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 33609 + ... + 100825.

Almost surely, 2^4518125089 is an apocalyptic number.

4518125089 is the 67217-th square number.

4518125089 is the 33609-th centered octagonal number.

It is an amenable number.

4518125089 is a deficient number, since it is larger than the sum of its proper divisors (67218).

4518125089 is an frugal number, since it uses more digits than its factorization.

4518125089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134434 (or 67217 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

The cubic root of 4518125089 is about 1653.1772375239.

The spelling of 4518125089 in words is "four billion, five hundred eighteen million, one hundred twenty-five thousand, eighty-nine".