189443484 has 18 divisors (see below), whose sum is σ = 478871120. Its totient is φ = 63147816.

The previous prime is 189443467. The next prime is 189443489. The reversal of 189443484 is 484344981.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189443489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2631124 + ... + 2631195.

Almost surely, 2^189443484 is an apocalyptic number.

It is an amenable number.

189443484 is an abundant number, since it is smaller than the sum of its proper divisors (289427636).

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

189443484 is a wasteful number, since it uses less digits than its factorization.

189443484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262329 (or 5262324 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 189443484 is about 13763.8469913030. The cubic root of 189443484 is about 574.3278689526.

The spelling of 189443484 in words is "one hundred eighty-nine million, four hundred forty-three thousand, four hundred eighty-four".