189454689 has 48 divisors (see below), whose sum is σ = 292653504. Its totient is φ = 117936000.

The previous prime is 189454673. The next prime is 189454751. The reversal of 189454689 is 986454981.

189454689 is a `hidden beast` number, since 1 + 8 + 94 + 546 + 8 + 9 = 666.

189454689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189454689 - 2⁴ = 189454673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189454649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1446154 + ... + 1446284.

It is an arithmetic number, because the mean of its divisors is an integer number (6096948).

Almost surely, 2^189454689 is an apocalyptic number.

It is an amenable number.

189454689 is a deficient number, since it is larger than the sum of its proper divisors (103198815).

189454689 is a wasteful number, since it uses less digits than its factorization.

189454689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 315 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 189454689 is about 13764.2540299139. The cubic root of 189454689 is about 574.3391919723.

The spelling of 189454689 in words is "one hundred eighty-nine million, four hundred fifty-four thousand, six hundred eighty-nine".