18114247 has 4 divisors (see below), whose sum is σ = 18130000. Its totient is φ = 18098496.

The previous prime is 18114227. The next prime is 18114281. The reversal of 18114247 is 74241181.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18114247 - 2¹⁹ = 17589959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18114227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6003 + ... + 8500.

It is an arithmetic number, because the mean of its divisors is an integer number (4532500).

Almost surely, 2^18114247 is an apocalyptic number.

18114247 is a deficient number, since it is larger than the sum of its proper divisors (15753).

18114247 is a wasteful number, since it uses less digits than its factorization.

18114247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15752.

The product of its digits is 1792, while the sum is 28.

The square root of 18114247 is about 4256.0835283157. The cubic root of 18114247 is about 262.6274368378.

The spelling of 18114247 in words is "eighteen million, one hundred fourteen thousand, two hundred forty-seven".