18093297 has 4 divisors (see below), whose sum is σ = 24124400. Its totient is φ = 12062196.

The previous prime is 18093293. The next prime is 18093307. The reversal of 18093297 is 79239081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18093297 - 2² = 18093293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18093293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3015547 + ... + 3015552.

It is an arithmetic number, because the mean of its divisors is an integer number (6031100).

Almost surely, 2^18093297 is an apocalyptic number.

It is an amenable number.

18093297 is a deficient number, since it is larger than the sum of its proper divisors (6031103).

18093297 is an equidigital number, since it uses as much as digits as its factorization.

18093297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031102.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 18093297 is about 4253.6216333849. The cubic root of 18093297 is about 262.5261506827.

Subtracting from 18093297 its product of nonzero digits (27216), we obtain a palindrome (18066081).

The spelling of 18093297 in words is "eighteen million, ninety-three thousand, two hundred ninety-seven".