189434384 has 20 divisors (see below), whose sum is σ = 369834960. Its totient is φ = 93993120.

The previous prime is 189434363. The next prime is 189434387. The reversal of 189434384 is 483434981.

It is not an unprimeable number, because it can be changed into a prime (189434387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43094 + ... + 47285.

It is an arithmetic number, because the mean of its divisors is an integer number (18491748).

Almost surely, 2^189434384 is an apocalyptic number.

It is an amenable number.

189434384 is a deficient number, since it is larger than the sum of its proper divisors (180400576).

189434384 is a wasteful number, since it uses less digits than its factorization.

189434384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90518 (or 90512 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 189434384 is about 13763.5164111502. The cubic root of 189434384 is about 574.3186727759.

The spelling of 189434384 in words is "one hundred eighty-nine million, four hundred thirty-four thousand, three hundred eighty-four".