18245145 has 16 divisors (see below), whose sum is σ = 29483712. Its totient is φ = 9633600.

The previous prime is 18245137. The next prime is 18245153. The reversal of 18245145 is 54154281.

It is an interprime number because it is at equal distance from previous prime (18245137) and next prime (18245153).

It is not a de Polignac number, because 18245145 - 2³ = 18245137 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 4507 + ... + 7536.

It is an arithmetic number, because the mean of its divisors is an integer number (1842732).

Almost surely, 2^18245145 is an apocalyptic number.

18245145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18245145 is a deficient number, since it is larger than the sum of its proper divisors (11238567).

18245145 is a wasteful number, since it uses less digits than its factorization.

18245145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12152.

The product of its digits is 6400, while the sum is 30.

The square root of 18245145 is about 4271.4336000926. The cubic root of 18245145 is about 263.2585226076.

The spelling of 18245145 in words is "eighteen million, two hundred forty-five thousand, one hundred forty-five".