18118942 has 8 divisors (see below), whose sum is σ = 28055232. Its totient is φ = 8767200.

The previous prime is 18118931. The next prime is 18118967. The reversal of 18118942 is 24981181.

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 = 18118898 and 18118907.

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, 146059 + ... + 146182.

It is an arithmetic number, because the mean of its divisors is an integer number (3506904).

Almost surely, 2^18118942 is an apocalyptic number.

18118942 is a deficient number, since it is larger than the sum of its proper divisors (9936290).

18118942 is a wasteful number, since it uses less digits than its factorization.

18118942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292274.

The product of its digits is 4608, while the sum is 34.

The square root of 18118942 is about 4256.6350560037. The cubic root of 18118942 is about 262.6501248598.

The spelling of 18118942 in words is "eighteen million, one hundred eighteen thousand, nine hundred forty-two".