18481093 has 8 divisors (see below), whose sum is σ = 19054112. Its totient is φ = 17912016.

The previous prime is 18481069. The next prime is 18481097. The reversal of 18481093 is 39018481.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18481093 - 2⁵ = 18481061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18481097) 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, 10546 + ... + 12172.

It is an arithmetic number, because the mean of its divisors is an integer number (2381764).

Almost surely, 2^18481093 is an apocalyptic number.

It is an amenable number.

18481093 is a deficient number, since it is larger than the sum of its proper divisors (573019).

18481093 is a wasteful number, since it uses less digits than its factorization.

18481093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18481093 is about 4298.9641775665. The cubic root of 18481093 is about 264.3884938724.

The spelling of 18481093 in words is "eighteen million, four hundred eighty-one thousand, ninety-three".