18048191 has 8 divisors (see below), whose sum is σ = 20751360. Its totient is φ = 15376248.

The previous prime is 18048187. The next prime is 18048197. The reversal of 18048191 is 19184081.

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 18048191 - 2² = 18048187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18048197) 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, 6551 + ... + 8888.

It is an arithmetic number, because the mean of its divisors is an integer number (2593920).

Almost surely, 2^18048191 is an apocalyptic number.

18048191 is a deficient number, since it is larger than the sum of its proper divisors (2703169).

18048191 is a wasteful number, since it uses less digits than its factorization.

18048191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15613.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 18048191 is about 4248.3162547061. The cubic root of 18048191 is about 262.3078127652.

The spelling of 18048191 in words is "eighteen million, forty-eight thousand, one hundred ninety-one".