18190542 has 8 divisors (see below), whose sum is σ = 36381096. Its totient is φ = 6063512.

The previous prime is 18190541. The next prime is 18190547. The reversal of 18190542 is 24509181.

It is a happy number.

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

18190542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18190541) 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 3 ways as a sum of consecutive naturals, for example, 1515873 + ... + 1515884.

It is an arithmetic number, because the mean of its divisors is an integer number (4547637).

Almost surely, 2^18190542 is an apocalyptic number.

18190542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18190542 is a wasteful number, since it uses less digits than its factorization.

18190542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031762.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 18190542 is about 4265.0371627924. The cubic root of 18190542 is about 262.9956386290.

The spelling of 18190542 in words is "eighteen million, one hundred ninety thousand, five hundred forty-two".