18528494917 has 8 divisors (see below), whose sum is σ = 19508528160. Its totient is φ = 17548946640.

The previous prime is 18528494903. The next prime is 18528494953. The reversal of 18528494917 is 71949482581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18528494917 - 2¹⁵ = 18528462149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18528494977) 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 7 ways as a sum of consecutive naturals, for example, 41458 + ... + 196915.

It is an arithmetic number, because the mean of its divisors is an integer number (2438566020).

Almost surely, 2^18528494917 is an apocalyptic number.

It is an amenable number.

18528494917 is a deficient number, since it is larger than the sum of its proper divisors (980033243).

18528494917 is a wasteful number, since it uses less digits than its factorization.

18528494917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242483.

The product of its digits is 5806080, while the sum is 58.

The spelling of 18528494917 in words is "eighteen billion, five hundred twenty-eight million, four hundred ninety-four thousand, nine hundred seventeen".