18268089 has 8 divisors (see below), whose sum is σ = 27837120. Its totient is φ = 10438896.

The previous prime is 18268079. The next prime is 18268099. The reversal of 18268089 is 98086281.

It is an interprime number because it is at equal distance from previous prime (18268079) and next prime (18268099).

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

It is not a de Polignac number, because 18268089 - 2⁷ = 18267961 is a prime.

It is a super-3 number, since 3×18268089³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18268089.

It is not an unprimeable number, because it can be changed into a prime (18268009) 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, 434934 + ... + 434975.

It is an arithmetic number, because the mean of its divisors is an integer number (3479640).

Almost surely, 2^18268089 is an apocalyptic number.

It is an amenable number.

18268089 is a deficient number, since it is larger than the sum of its proper divisors (9569031).

18268089 is an equidigital number, since it uses as much as digits as its factorization.

18268089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869919.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 18268089 is about 4274.1185056103. The cubic root of 18268089 is about 263.3688290915.

The spelling of 18268089 in words is "eighteen million, two hundred sixty-eight thousand, eighty-nine".