18032545 has 16 divisors (see below), whose sum is σ = 22468608. Its totient is φ = 13878720.

The previous prime is 18032513. The next prime is 18032587. The reversal of 18032545 is 54523081.

It is not a de Polignac number, because 18032545 - 2⁵ = 18032513 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 48952 + ... + 49318.

It is an arithmetic number, because the mean of its divisors is an integer number (1404288).

Almost surely, 2^18032545 is an apocalyptic number.

It is an amenable number.

18032545 is a deficient number, since it is larger than the sum of its proper divisors (4436063).

18032545 is a wasteful number, since it uses less digits than its factorization.

18032545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 18032545 is about 4246.4744200336. The cubic root of 18032545 is about 262.2319925246.

The spelling of 18032545 in words is "eighteen million, thirty-two thousand, five hundred forty-five".