18714385 has 4 divisors (see below), whose sum is σ = 22457268. Its totient is φ = 14971504.

The previous prime is 18714361. The next prime is 18714419. The reversal of 18714385 is 58341781.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12278016 + 6436369 = 3504^2 + 2537^2 .

It is a cyclic number.

It is not a de Polignac number, because 18714385 - 2⁷ = 18714257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871434 + ... + 1871443.

It is an arithmetic number, because the mean of its divisors is an integer number (5614317).

Almost surely, 2^18714385 is an apocalyptic number.

It is an amenable number.

18714385 is a deficient number, since it is larger than the sum of its proper divisors (3742883).

18714385 is an equidigital number, since it uses as much as digits as its factorization.

18714385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742882.

The product of its digits is 26880, while the sum is 37.

The square root of 18714385 is about 4326.0125982248. The cubic root of 18714385 is about 265.4963286377.

The spelling of 18714385 in words is "eighteen million, seven hundred fourteen thousand, three hundred eighty-five".