18270249 has 8 divisors (see below), whose sum is σ = 24425472. Its totient is φ = 12147600.

The previous prime is 18270233. The next prime is 18270269. The reversal of 18270249 is 94207281.

It is a happy number.

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

It is not a de Polignac number, because 18270249 - 2⁴ = 18270233 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (18270269) 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, 6802 + ... + 9099.

It is an arithmetic number, because the mean of its divisors is an integer number (3053184).

Almost surely, 2^18270249 is an apocalyptic number.

It is an amenable number.

18270249 is a deficient number, since it is larger than the sum of its proper divisors (6155223).

18270249 is a wasteful number, since it uses less digits than its factorization.

18270249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16287.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 18270249 is about 4274.3711818231. The cubic root of 18270249 is about 263.3792088353.

The spelling of 18270249 in words is "eighteen million, two hundred seventy thousand, two hundred forty-nine".