18093193 has 8 divisors (see below), whose sum is σ = 18507528. Its totient is φ = 17681664.

The previous prime is 18093191. The next prime is 18093197. The reversal of 18093193 is 39139081.

It can be written as a sum of positive squares in 4 ways, for example, as 5184 + 18088009 = 72^2 + 4253^2 .

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 18093193 - 2¹ = 18093191 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18093191) 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, 17355 + ... + 18367.

It is an arithmetic number, because the mean of its divisors is an integer number (2313441).

Almost surely, 2^18093193 is an apocalyptic number.

It is an amenable number.

18093193 is a deficient number, since it is larger than the sum of its proper divisors (414335).

18093193 is a wasteful number, since it uses less digits than its factorization.

18093193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 18093193 is about 4253.6094084906. The cubic root of 18093193 is about 262.5256476830.

The spelling of 18093193 in words is "eighteen million, ninety-three thousand, one hundred ninety-three".