18814238 has 8 divisors (see below), whose sum is σ = 28485432. Its totient is φ = 9319096.

The previous prime is 18814193. The next prime is 18814247. The reversal of 18814238 is 83241881.

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

It is a junction number, because it is equal to n+sod(n) for n = 18814198 and 18814207.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 43745 + ... + 44172.

It is an arithmetic number, because the mean of its divisors is an integer number (3560679).

Almost surely, 2^18814238 is an apocalyptic number.

18814238 is a deficient number, since it is larger than the sum of its proper divisors (9671194).

18814238 is a wasteful number, since it uses less digits than its factorization.

18814238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88026.

The product of its digits is 12288, while the sum is 35.

The square root of 18814238 is about 4337.5382419063. The cubic root of 18814238 is about 265.9676878609.

The spelling of 18814238 in words is "eighteen million, eight hundred fourteen thousand, two hundred thirty-eight".