189642008 has 16 divisors (see below), whose sum is σ = 355725000. Its totient is φ = 94782016.

The previous prime is 189642007. The next prime is 189642017. The reversal of 189642008 is 800246981.

189642008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189642007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34643 + ... + 39741.

Almost surely, 2^189642008 is an apocalyptic number.

It is an amenable number.

189642008 is a deficient number, since it is larger than the sum of its proper divisors (166082992).

189642008 is a wasteful number, since it uses less digits than its factorization.

189642008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9754 (or 9750 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 189642008 is about 13771.0568948066. The cubic root of 189642008 is about 574.5284178779.

Adding to 189642008 its reverse (800246981), we get a palindrome (989888989).

The spelling of 189642008 in words is "one hundred eighty-nine million, six hundred forty-two thousand, eight".