18214249 has 8 divisors (see below), whose sum is σ = 18760448. Its totient is φ = 17670960.

The previous prime is 18214247. The next prime is 18214277. The reversal of 18214249 is 94241281.

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 18214249 - 2¹ = 18214247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18214249.

It is not an unprimeable number, because it can be changed into a prime (18214243) 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, 22054 + ... + 22864.

It is an arithmetic number, because the mean of its divisors is an integer number (2345056).

Almost surely, 2^18214249 is an apocalyptic number.

It is an amenable number.

18214249 is a deficient number, since it is larger than the sum of its proper divisors (546199).

18214249 is an equidigital number, since it uses as much as digits as its factorization.

18214249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455.

The product of its digits is 4608, while the sum is 31.

The square root of 18214249 is about 4267.8154833591. The cubic root of 18214249 is about 263.1098395698.

The spelling of 18214249 in words is "eighteen million, two hundred fourteen thousand, two hundred forty-nine".