18385942 has 24 divisors (see below), whose sum is σ = 30289896. Its totient is φ = 8340864.

The previous prime is 18385931. The next prime is 18385951. The reversal of 18385942 is 24958381.

Its product of digits (69120) is a multiple of the sum of its prime factors (720).

It is a junction number, because it is equal to n+sod(n) for n = 18385895 and 18385904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28273 + ... + 28915.

It is an arithmetic number, because the mean of its divisors is an integer number (1262079).

Almost surely, 2^18385942 is an apocalyptic number.

18385942 is a deficient number, since it is larger than the sum of its proper divisors (11903954).

18385942 is a wasteful number, since it uses less digits than its factorization.

18385942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 691 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 18385942 is about 4287.8831607216. The cubic root of 18385942 is about 263.9339730043.

The spelling of 18385942 in words is "eighteen million, three hundred eighty-five thousand, nine hundred forty-two".