18108523 has 8 divisors (see below), whose sum is σ = 18398160. Its totient is φ = 17821440.

The previous prime is 18108509. The next prime is 18108529. The reversal of 18108523 is 32580181.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18108523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18108491 and 18108500.

It is not an unprimeable number, because it can be changed into a prime (18108529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17443 + ... + 18451.

It is an arithmetic number, because the mean of its divisors is an integer number (2299770).

Almost surely, 2^18108523 is an apocalyptic number.

18108523 is a deficient number, since it is larger than the sum of its proper divisors (289637).

18108523 is a wasteful number, since it uses less digits than its factorization.

18108523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 18108523 is about 4255.4110259762. The cubic root of 18108523 is about 262.5997709934.

The spelling of 18108523 in words is "eighteen million, one hundred eight thousand, five hundred twenty-three".