18075394 has 16 divisors (see below), whose sum is σ = 28166688. Its totient is φ = 8692992.

The previous prime is 18075391. The next prime is 18075397. The reversal of 18075394 is 49357081.

It is an interprime number because it is at equal distance from previous prime (18075391) and next prime (18075397).

It is not an unprimeable number, because it can be changed into a prime (18075391) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4194 + ... + 7330.

It is an arithmetic number, because the mean of its divisors is an integer number (1760418).

Almost surely, 2^18075394 is an apocalyptic number.

18075394 is a deficient number, since it is larger than the sum of its proper divisors (10091294).

18075394 is a wasteful number, since it uses less digits than its factorization.

18075394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3249.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 18075394 is about 4251.5166705542. The cubic root of 18075394 is about 262.4395337675.

The spelling of 18075394 in words is "eighteen million, seventy-five thousand, three hundred ninety-four".