189668080 has 80 divisors (see below), whose sum is σ = 507538944. Its totient is φ = 64569600.

The previous prime is 189668071. The next prime is 189668117. The reversal of 189668080 is 80866981.

189668080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 189668080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83439 + ... + 85681.

Almost surely, 2^189668080 is an apocalyptic number.

189668080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189668080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253769472).

189668080 is an abundant number, since it is smaller than the sum of its proper divisors (317870864).

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

189668080 is a wasteful number, since it uses less digits than its factorization.

189668080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414 (or 2408 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 189668080 is about 13772.0034853321. The cubic root of 189668080 is about 574.5547454106.

The spelling of 189668080 in words is "one hundred eighty-nine million, six hundred sixty-eight thousand, eighty".