189589768 has 8 divisors (see below), whose sum is σ = 355480830. Its totient is φ = 94794880.

The previous prime is 189589747. The next prime is 189589783. The reversal of 189589768 is 867985981.

It can be written as a sum of positive squares in only one way, i.e., 154803364 + 34786404 = 12442^2 + 5898^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11849353 + ... + 11849368.

Almost surely, 2^189589768 is an apocalyptic number.

It is an amenable number.

189589768 is a deficient number, since it is larger than the sum of its proper divisors (165891062).

189589768 is a wasteful number, since it uses less digits than its factorization.

189589768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23698727 (or 23698723 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 61.

The square root of 189589768 is about 13769.1600324784. The cubic root of 189589768 is about 574.4756586094.

The spelling of 189589768 in words is "one hundred eighty-nine million, five hundred eighty-nine thousand, seven hundred sixty-eight".