189841008 has 160 divisors (see below), whose sum is σ = 597104640. Its totient is φ = 50768640.

The previous prime is 189840991. The next prime is 189841013. The reversal of 189841008 is 800148981.

It is a happy number.

189841008 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 836191 + ... + 836417.

It is an arithmetic number, because the mean of its divisors is an integer number (3731904).

Almost surely, 2^189841008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189841008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298552320).

189841008 is an abundant number, since it is smaller than the sum of its proper divisors (407263632).

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

189841008 is a wasteful number, since it uses less digits than its factorization.

189841008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 189841008 is about 13778.2802990794. The cubic root of 189841008 is about 574.7293072425.

Adding to 189841008 its reverse (800148981), we get a palindrome (989989989).

The spelling of 189841008 in words is "one hundred eighty-nine million, eight hundred forty-one thousand, eight".