18714993 has 8 divisors (see below), whose sum is σ = 27221856. Its totient is φ = 11342400.

The previous prime is 18714959. The next prime is 18715003. The reversal of 18714993 is 39941781.

It is a happy number.

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

It is not a de Polignac number, because 18714993 - 2¹⁶ = 18649457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18714953) 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, 283528 + ... + 283593.

It is an arithmetic number, because the mean of its divisors is an integer number (3402732).

Almost surely, 2^18714993 is an apocalyptic number.

It is an amenable number.

18714993 is a deficient number, since it is larger than the sum of its proper divisors (8506863).

18714993 is a wasteful number, since it uses less digits than its factorization.

18714993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567135.

The product of its digits is 54432, while the sum is 42.

The square root of 18714993 is about 4326.0828702187. The cubic root of 18714993 is about 265.4992037882.

The spelling of 18714993 in words is "eighteen million, seven hundred fourteen thousand, nine hundred ninety-three".