18249113 has 8 divisors (see below), whose sum is σ = 18956160. Its totient is φ = 17555440.

The previous prime is 18249083. The next prime is 18249131. The reversal of 18249113 is 31194281.

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

It is not a de Polignac number, because 18249113 - 2²⁰ = 17200537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18269113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518 + ... + 6063.

It is an arithmetic number, because the mean of its divisors is an integer number (2369520).

Almost surely, 2^18249113 is an apocalyptic number.

It is an amenable number.

18249113 is a deficient number, since it is larger than the sum of its proper divisors (707047).

18249113 is an equidigital number, since it uses as much as digits as its factorization.

18249113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687.

The product of its digits is 1728, while the sum is 29.

The square root of 18249113 is about 4271.8980558997. The cubic root of 18249113 is about 263.2776059327.

The spelling of 18249113 in words is "eighteen million, two hundred forty-nine thousand, one hundred thirteen".