18147075 has 48 divisors (see below), whose sum is σ = 32605056. Its totient is φ = 8870400.

The previous prime is 18147053. The next prime is 18147089. The reversal of 18147075 is 57074181.

It is not a de Polignac number, because 18147075 - 2¹⁵ = 18114307 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 47 ways as a sum of consecutive naturals, for example, 54660 + ... + 54990.

It is an arithmetic number, because the mean of its divisors is an integer number (679272).

Almost surely, 2^18147075 is an apocalyptic number.

18147075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18147075 is a deficient number, since it is larger than the sum of its proper divisors (14457981).

18147075 is a wasteful number, since it uses less digits than its factorization.

18147075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 18147075 is about 4259.9383798360. The cubic root of 18147075 is about 262.7859921550.

The spelling of 18147075 in words is "eighteen million, one hundred forty-seven thousand, seventy-five".