18081093 has 8 divisors (see below), whose sum is σ = 24164800. Its totient is φ = 12025728.

The previous prime is 18081083. The next prime is 18081097. The reversal of 18081093 is 39018081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18081093 - 2⁹ = 18080581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18081093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18081097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5548 + ... + 8181.

It is an arithmetic number, because the mean of its divisors is an integer number (3020600).

Almost surely, 2^18081093 is an apocalyptic number.

It is an amenable number.

18081093 is a deficient number, since it is larger than the sum of its proper divisors (6083707).

18081093 is a wasteful number, since it uses less digits than its factorization.

18081093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14171.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 18081093 is about 4252.1868491401. The cubic root of 18081093 is about 262.4671124331.

The spelling of 18081093 in words is "eighteen million, eighty-one thousand, ninety-three".