18843142 has 8 divisors (see below), whose sum is σ = 28286136. Its totient is φ = 9414432.

The previous prime is 18843137. The next prime is 18843199. The reversal of 18843142 is 24134881.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798 + ... + 6190.

It is an arithmetic number, because the mean of its divisors is an integer number (3535767).

Almost surely, 2^18843142 is an apocalyptic number.

18843142 is a deficient number, since it is larger than the sum of its proper divisors (9442994).

18843142 is a wasteful number, since it uses less digits than its factorization.

18843142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142.

The product of its digits is 6144, while the sum is 31.

The square root of 18843142 is about 4340.8688070477. The cubic root of 18843142 is about 266.1038187469.

The spelling of 18843142 in words is "eighteen million, eight hundred forty-three thousand, one hundred forty-two".