18889134 has 16 divisors (see below), whose sum is σ = 41212800. Its totient is φ = 5723960.

The previous prime is 18889133. The next prime is 18889153. The reversal of 18889134 is 43198881.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18889133) 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 7 ways as a sum of consecutive naturals, for example, 143034 + ... + 143165.

It is an arithmetic number, because the mean of its divisors is an integer number (2575800).

Almost surely, 2^18889134 is an apocalyptic number.

18889134 is an abundant number, since it is smaller than the sum of its proper divisors (22323666).

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

18889134 is a wasteful number, since it uses less digits than its factorization.

18889134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286215.

The product of its digits is 55296, while the sum is 42.

The square root of 18889134 is about 4346.1631354564. The cubic root of 18889134 is about 266.3201433037.

The spelling of 18889134 in words is "eighteen million, eight hundred eighty-nine thousand, one hundred thirty-four".