18589242 has 16 divisors (see below), whose sum is σ = 42489792. Its totient is φ = 5311200.

The previous prime is 18589237. The next prime is 18589283. The reversal of 18589242 is 24298581.

It is a self number, because there is not a number n which added to its sum of digits gives 18589242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221259 + ... + 221342.

It is an arithmetic number, because the mean of its divisors is an integer number (2655612).

Almost surely, 2^18589242 is an apocalyptic number.

18589242 is an abundant number, since it is smaller than the sum of its proper divisors (23900550).

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

18589242 is a wasteful number, since it uses less digits than its factorization.

18589242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442613.

The product of its digits is 46080, while the sum is 39.

The square root of 18589242 is about 4311.5243244124. The cubic root of 18589242 is about 264.9032137353.

The spelling of 18589242 in words is "eighteen million, five hundred eighty-nine thousand, two hundred forty-two".