18245205 has 96 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 8064000.

The previous prime is 18245203. The next prime is 18245207. The reversal of 18245205 is 50254281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18245203) and next prime (18245207).

It is not a de Polignac number, because 18245205 - 2¹ = 18245203 is a prime.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245203) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 444985 + ... + 445025.

It is an arithmetic number, because the mean of its divisors is an integer number (393120).

Almost surely, 2^18245205 is an apocalyptic number.

18245205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18245205 is an abundant number, since it is smaller than the sum of its proper divisors (19494315).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18245205 is a wasteful number, since it uses less digits than its factorization.

18245205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 18245205 is about 4271.4406234899. The cubic root of 18245205 is about 263.2588111866.

Adding to 18245205 its reverse (50254281), we get a palindrome (68499486).

The spelling of 18245205 in words is "eighteen million, two hundred forty-five thousand, two hundred five".