18245361 has 4 divisors (see below), whose sum is σ = 24327152. Its totient is φ = 12163572.

The previous prime is 18245341. The next prime is 18245363. The reversal of 18245361 is 16354281.

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 18245361 - 2¹⁹ = 17721073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18245363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040891 + ... + 3040896.

It is an arithmetic number, because the mean of its divisors is an integer number (6081788).

Almost surely, 2^18245361 is an apocalyptic number.

It is an amenable number.

18245361 is a deficient number, since it is larger than the sum of its proper divisors (6081791).

18245361 is an equidigital number, since it uses as much as digits as its factorization.

18245361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6081790.

The product of its digits is 5760, while the sum is 30.

The square root of 18245361 is about 4271.4588842689. The cubic root of 18245361 is about 263.2595614889.

The spelling of 18245361 in words is "eighteen million, two hundred forty-five thousand, three hundred sixty-one".