18784142 has 8 divisors (see below), whose sum is σ = 30343656. Its totient is φ = 8669592.

The previous prime is 18784127. The next prime is 18784153. The reversal of 18784142 is 24148781.

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

It is a congruent 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, 361208 + ... + 361259.

It is an arithmetic number, because the mean of its divisors is an integer number (3792957).

Almost surely, 2^18784142 is an apocalyptic number.

18784142 is a deficient number, since it is larger than the sum of its proper divisors (11559514).

18784142 is a wasteful number, since it uses less digits than its factorization.

18784142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722482.

The product of its digits is 14336, while the sum is 35.

The square root of 18784142 is about 4334.0676044566. The cubic root of 18784142 is about 265.8257946935.

The spelling of 18784142 in words is "eighteen million, seven hundred eighty-four thousand, one hundred forty-two".