18112269 has 16 divisors (see below), whose sum is σ = 28552320. Its totient is φ = 9992640.

The previous prime is 18112253. The next prime is 18112279. The reversal of 18112269 is 96221181.

It is a happy number.

It is not a de Polignac number, because 18112269 - 2⁴ = 18112253 is a prime.

It is a super-2 number, since 2×18112269² = 656108576656722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18112219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14262 + ... + 15479.

It is an arithmetic number, because the mean of its divisors is an integer number (1784520).

Almost surely, 2^18112269 is an apocalyptic number.

It is an amenable number.

18112269 is a deficient number, since it is larger than the sum of its proper divisors (10440051).

18112269 is a wasteful number, since it uses less digits than its factorization.

18112269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29780.

The product of its digits is 1728, while the sum is 30.

The square root of 18112269 is about 4255.8511487128. The cubic root of 18112269 is about 262.6178772173.

It can be divided in two parts, 18112 and 269, that added together give a palindrome (18381).

The spelling of 18112269 in words is "eighteen million, one hundred twelve thousand, two hundred sixty-nine".