18345297 has 4 divisors (see below), whose sum is σ = 24460400. Its totient is φ = 12230196.

The previous prime is 18345289. The next prime is 18345311. The reversal of 18345297 is 79254381.

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 18345297 - 2³ = 18345289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18345097) 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, 3057547 + ... + 3057552.

It is an arithmetic number, because the mean of its divisors is an integer number (6115100).

Almost surely, 2^18345297 is an apocalyptic number.

It is an amenable number.

18345297 is a deficient number, since it is larger than the sum of its proper divisors (6115103).

18345297 is an equidigital number, since it uses as much as digits as its factorization.

18345297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115102.

The product of its digits is 60480, while the sum is 39.

The square root of 18345297 is about 4283.1410203261. The cubic root of 18345297 is about 263.7393404046.

The spelling of 18345297 in words is "eighteen million, three hundred forty-five thousand, two hundred ninety-seven".