18116235 has 12 divisors (see below), whose sum is σ = 31401552. Its totient is φ = 9661968.

The previous prime is 18116227. The next prime is 18116239. The reversal of 18116235 is 53261181.

It is not a de Polignac number, because 18116235 - 2³ = 18116227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18116199 and 18116208.

It is not an unprimeable number, because it can be changed into a prime (18116239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201247 + ... + 201336.

It is an arithmetic number, because the mean of its divisors is an integer number (2616796).

Almost surely, 2^18116235 is an apocalyptic number.

18116235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18116235 is a deficient number, since it is larger than the sum of its proper divisors (13285317).

18116235 is a wasteful number, since it uses less digits than its factorization.

18116235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402594 (or 402591 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 18116235 is about 4256.3170699561. The cubic root of 18116235 is about 262.6370440868.

The spelling of 18116235 in words is "eighteen million, one hundred sixteen thousand, two hundred thirty-five".