18241249 has 8 divisors (see below), whose sum is σ = 19922112. Its totient is φ = 16600080.

The previous prime is 18241241. The next prime is 18241271. The reversal of 18241249 is 94214281.

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 18241249 - 2³ = 18241241 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 18241249.

It is not an unprimeable number, because it can be changed into a prime (18241241) 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, 8959 + ... + 10804.

It is an arithmetic number, because the mean of its divisors is an integer number (2490264).

Almost surely, 2^18241249 is an apocalyptic number.

It is an amenable number.

18241249 is a deficient number, since it is larger than the sum of its proper divisors (1680863).

18241249 is a wasteful number, since it uses less digits than its factorization.

18241249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19847.

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

The square root of 18241249 is about 4270.9775227692. The cubic root of 18241249 is about 263.2397828604.

The spelling of 18241249 in words is "eighteen million, two hundred forty-one thousand, two hundred forty-nine".