18093142 has 4 divisors (see below), whose sum is σ = 27139716. Its totient is φ = 9046570.

The previous prime is 18093137. The next prime is 18093161. The reversal of 18093142 is 24139081.

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: 24139081 = 223 ⋅108247.

It is a self number, because there is not a number n which added to its sum of digits gives 18093142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4523284 + ... + 4523287.

It is an arithmetic number, because the mean of its divisors is an integer number (6784929).

Almost surely, 2^18093142 is an apocalyptic number.

18093142 is a deficient number, since it is larger than the sum of its proper divisors (9046574).

18093142 is an equidigital number, since it uses as much as digits as its factorization.

18093142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9046573.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18093142 is about 4253.6034135777. The cubic root of 18093142 is about 262.5254010189.

The spelling of 18093142 in words is "eighteen million, ninety-three thousand, one hundred forty-two".