18032145 has 16 divisors (see below), whose sum is σ = 29218560. Its totient is φ = 9494784.

The previous prime is 18032141. The next prime is 18032153. The reversal of 18032145 is 54123081.

It is not a de Polignac number, because 18032145 - 2² = 18032141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18032141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6424 + ... + 8793.

It is an arithmetic number, because the mean of its divisors is an integer number (1826160).

Almost surely, 2^18032145 is an apocalyptic number.

18032145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18032145 is a deficient number, since it is larger than the sum of its proper divisors (11186415).

18032145 is a wasteful number, since it uses less digits than its factorization.

18032145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15304.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18032145 is about 4246.4273218789. The cubic root of 18032145 is about 262.2300535568.

The spelling of 18032145 in words is "eighteen million, thirty-two thousand, one hundred forty-five".