18093794 has 4 divisors (see below), whose sum is σ = 27140694. Its totient is φ = 9046896.

The previous prime is 18093791. The next prime is 18093799. The reversal of 18093794 is 49739081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49739081 = 7 ⋅7105583.

It can be written as a sum of positive squares in only one way, i.e., 13053769 + 5040025 = 3613^2 + 2245^2 .

It is not an unprimeable number, because it can be changed into a prime (18093791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4523447 + ... + 4523450.

Almost surely, 2^18093794 is an apocalyptic number.

18093794 is a deficient number, since it is larger than the sum of its proper divisors (9046900).

18093794 is an equidigital number, since it uses as much as digits as its factorization.

18093794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9046899.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 18093794 is about 4253.6800537887. The cubic root of 18093794 is about 262.5285544146.

The spelling of 18093794 in words is "eighteen million, ninety-three thousand, seven hundred ninety-four".