18375385 has 32 divisors (see below), whose sum is σ = 27060480. Its totient is φ = 11692032.

The previous prime is 18375377. The next prime is 18375391. The reversal of 18375385 is 58357381.

It is a cyclic number.

It is not a de Polignac number, because 18375385 - 2³ = 18375377 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 31 ways as a sum of consecutive naturals, for example, 52782 + ... + 53128.

It is an arithmetic number, because the mean of its divisors is an integer number (845640).

Almost surely, 2^18375385 is an apocalyptic number.

It is an amenable number.

18375385 is a deficient number, since it is larger than the sum of its proper divisors (8685095).

18375385 is a wasteful number, since it uses less digits than its factorization.

18375385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its digits is 100800, while the sum is 40.

The square root of 18375385 is about 4286.6519569473. The cubic root of 18375385 is about 263.8834473650.

The spelling of 18375385 in words is "eighteen million, three hundred seventy-five thousand, three hundred eighty-five".