18254245 has 4 divisors (see below), whose sum is σ = 21905100. Its totient is φ = 14603392.

The previous prime is 18254237. The next prime is 18254251. The reversal of 18254245 is 54245281.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2556801 + 15697444 = 1599^2 + 3962^2 .

It is a cyclic number.

It is not a de Polignac number, because 18254245 - 2³ = 18254237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1825420 + ... + 1825429.

It is an arithmetic number, because the mean of its divisors is an integer number (5476275).

Almost surely, 2^18254245 is an apocalyptic number.

It is an amenable number.

18254245 is a deficient number, since it is larger than the sum of its proper divisors (3650855).

18254245 is an equidigital number, since it uses as much as digits as its factorization.

18254245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650854.

The product of its digits is 12800, while the sum is 31.

The square root of 18254245 is about 4272.4986834404. The cubic root of 18254245 is about 263.3022831876.

The spelling of 18254245 in words is "eighteen million, two hundred fifty-four thousand, two hundred forty-five".