189380688 has 120 divisors (see below), whose sum is σ = 577427328. Its totient is φ = 53319168.

The previous prime is 189380687. The next prime is 189380707. The reversal of 189380688 is 886083981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 189380688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189380683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171145 + ... + 172247.

Almost surely, 2^189380688 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 189380688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288713664).

189380688 is an abundant number, since it is smaller than the sum of its proper divisors (388046640).

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

189380688 is a wasteful number, since it uses less digits than its factorization.

189380688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The square root of 189380688 is about 13761.5656086072. The cubic root of 189380688 is about 574.2644032727.

The spelling of 189380688 in words is "one hundred eighty-nine million, three hundred eighty thousand, six hundred eighty-eight".