189384458 has 4 divisors (see below), whose sum is σ = 284076690. Its totient is φ = 94692228.

The previous prime is 189384451. The next prime is 189384469. The reversal of 189384458 is 854483981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123498769 + 65885689 = 11113^2 + 8117^2 .

It is not an unprimeable number, because it can be changed into a prime (189384451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47346113 + ... + 47346116.

Almost surely, 2^189384458 is an apocalyptic number.

189384458 is a deficient number, since it is larger than the sum of its proper divisors (94692232).

189384458 is an equidigital number, since it uses as much as digits as its factorization.

189384458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94692231.

The product of its digits is 1105920, while the sum is 50.

The square root of 189384458 is about 13761.7025836195. The cubic root of 189384458 is about 574.2682138732.

The spelling of 189384458 in words is "one hundred eighty-nine million, three hundred eighty-four thousand, four hundred fifty-eight".