189669648 has 80 divisors (see below), whose sum is σ = 562313216. Its totient is φ = 53965440.

The previous prime is 189669619. The next prime is 189669671. The reversal of 189669648 is 846966981.

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, 90015 + ... + 92097.

Almost surely, 2^189669648 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 189669648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281156608).

189669648 is an abundant number, since it is smaller than the sum of its proper divisors (372643568).

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

189669648 is a wasteful number, since it uses less digits than its factorization.

189669648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372 (or 2366 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 57.

The square root of 189669648 is about 13772.0604122985. The cubic root of 189669648 is about 574.5563287018.

The spelling of 189669648 in words is "one hundred eighty-nine million, six hundred sixty-nine thousand, six hundred forty-eight".