18418342 has 8 divisors (see below), whose sum is σ = 27657000. Its totient is φ = 9199344.

The previous prime is 18418339. The next prime is 18418343. The reversal of 18418342 is 24381481.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18418343) 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, 2292 + ... + 6487.

It is an arithmetic number, because the mean of its divisors is an integer number (3457125).

Almost surely, 2^18418342 is an apocalyptic number.

18418342 is a deficient number, since it is larger than the sum of its proper divisors (9238658).

18418342 is a wasteful number, since it uses less digits than its factorization.

18418342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9830.

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

The square root of 18418342 is about 4291.6595857547. The cubic root of 18418342 is about 264.0889182420.

The spelling of 18418342 in words is "eighteen million, four hundred eighteen thousand, three hundred forty-two".