8528018909 has 4 divisors (see below), whose sum is σ = 8531833404. Its totient is φ = 8524204416.

The previous prime is 8528018831. The next prime is 8528018923. The reversal of 8528018909 is 9098108258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9098108258 = 2 ⋅4549054129.

It can be written as a sum of positive squares in 2 ways, for example, as 5987354884 + 2540664025 = 77378^2 + 50405^2 .

It is a cyclic number.

It is not a de Polignac number, because 8528018909 - 2¹⁶ = 8527953373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8528018209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1903892 + ... + 1908365.

It is an arithmetic number, because the mean of its divisors is an integer number (2132958351).

Almost surely, 2^8528018909 is an apocalyptic number.

It is an amenable number.

8528018909 is a deficient number, since it is larger than the sum of its proper divisors (3814495).

8528018909 is a wasteful number, since it uses less digits than its factorization.

8528018909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814494.

The product of its (nonzero) digits is 414720, while the sum is 50.

The square root of 8528018909 is about 92347.2734248283. The cubic root of 8528018909 is about 2043.0675135479.

The spelling of 8528018909 in words is "eight billion, five hundred twenty-eight million, eighteen thousand, nine hundred nine".