18859942 has 8 divisors (see below), whose sum is σ = 28314000. Its totient is φ = 9421944.

The previous prime is 18859909. The next prime is 18859949. The reversal of 18859942 is 24995881.

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 = 18859892 and 18859901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18859949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442 + ... + 6157.

It is an arithmetic number, because the mean of its divisors is an integer number (3539250).

Almost surely, 2^18859942 is an apocalyptic number.

18859942 is a deficient number, since it is larger than the sum of its proper divisors (9454058).

18859942 is a wasteful number, since it uses less digits than its factorization.

18859942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8030.

The product of its digits is 207360, while the sum is 46.

The square root of 18859942 is about 4342.8034724127. The cubic root of 18859942 is about 266.1828787432.

The spelling of 18859942 in words is "eighteen million, eight hundred fifty-nine thousand, nine hundred forty-two".