18245017 has 4 divisors (see below), whose sum is σ = 20851456. Its totient is φ = 15638580.

The previous prime is 18245009. The next prime is 18245023. The reversal of 18245017 is 71054281.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71054281 = 19 ⋅3739699.

It is a cyclic number.

It is not a de Polignac number, because 18245017 - 2³ = 18245009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18245047) 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, 1303209 + ... + 1303222.

It is an arithmetic number, because the mean of its divisors is an integer number (5212864).

Almost surely, 2^18245017 is an apocalyptic number.

It is an amenable number.

18245017 is a deficient number, since it is larger than the sum of its proper divisors (2606439).

18245017 is an equidigital number, since it uses as much as digits as its factorization.

18245017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606438.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 18245017 is about 4271.4186168064. The cubic root of 18245017 is about 263.2579069704.

Adding to 18245017 its reverse (71054281), we get a palindrome (89299298).

The spelling of 18245017 in words is "eighteen million, two hundred forty-five thousand, seventeen".