18275145 has 16 divisors (see below), whose sum is σ = 33417600. Its totient is φ = 8354304.

The previous prime is 18275113. The next prime is 18275167. The reversal of 18275145 is 54157281.

It is not a de Polignac number, because 18275145 - 2⁵ = 18275113 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86920 + ... + 87129.

It is an arithmetic number, because the mean of its divisors is an integer number (2088600).

Almost surely, 2^18275145 is an apocalyptic number.

18275145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18275145 is a deficient number, since it is larger than the sum of its proper divisors (15142455).

18275145 is a wasteful number, since it uses less digits than its factorization.

18275145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174064.

The product of its digits is 11200, while the sum is 33.

The square root of 18275145 is about 4274.9438592805. The cubic root of 18275145 is about 263.4027332262.

The spelling of 18275145 in words is "eighteen million, two hundred seventy-five thousand, one hundred forty-five".