18268869 has 8 divisors (see below), whose sum is σ = 25198560. Its totient is φ = 11759216.

The previous prime is 18268849. The next prime is 18268891. The reversal of 18268869 is 96886281.

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 18268869 - 2¹² = 18264773 is a prime.

It is a super-2 number, since 2×18268869² = 667503149078322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18268849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104907 + ... + 105080.

It is an arithmetic number, because the mean of its divisors is an integer number (3149820).

Almost surely, 2^18268869 is an apocalyptic number.

It is an amenable number.

18268869 is a deficient number, since it is larger than the sum of its proper divisors (6929691).

18268869 is a wasteful number, since it uses less digits than its factorization.

18268869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210019.

The product of its digits is 331776, while the sum is 48.

The square root of 18268869 is about 4274.2097515213. The cubic root of 18268869 is about 263.3725774267.

The spelling of 18268869 in words is "eighteen million, two hundred sixty-eight thousand, eight hundred sixty-nine".