18589042 has 4 divisors (see below), whose sum is σ = 27883566. Its totient is φ = 9294520.

The previous prime is 18589033. The next prime is 18589063. The reversal of 18589042 is 24098581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15280281 + 3308761 = 3909^2 + 1819^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18588992 and 18589010.

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 as a sum of consecutive naturals, namely, 4647259 + ... + 4647262.

Almost surely, 2^18589042 is an apocalyptic number.

18589042 is a deficient number, since it is larger than the sum of its proper divisors (9294524).

18589042 is an equidigital number, since it uses as much as digits as its factorization.

18589042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9294523.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 18589042 is about 4311.5011306968. The cubic root of 18589042 is about 264.9022637085.

The spelling of 18589042 in words is "eighteen million, five hundred eighty-nine thousand, forty-two".