18658342 has 32 divisors (see below), whose sum is σ = 31150080. Its totient is φ = 8346240.

The previous prime is 18658331. The next prime is 18658349. The reversal of 18658342 is 24385681.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18658349) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 55198 + ... + 55534.

It is an arithmetic number, because the mean of its divisors is an integer number (973440).

Almost surely, 2^18658342 is an apocalyptic number.

18658342 is a deficient number, since it is larger than the sum of its proper divisors (12491738).

18658342 is a wasteful number, since it uses less digits than its factorization.

18658342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its digits is 46080, while the sum is 37.

The square root of 18658342 is about 4319.5302985394. The cubic root of 18658342 is about 265.2310409428.

The spelling of 18658342 in words is "eighteen million, six hundred fifty-eight thousand, three hundred forty-two".