189644484 has 24 divisors (see below), whose sum is σ = 456779008. Its totient is φ = 61175520.

The previous prime is 189644471. The next prime is 189644513. The reversal of 189644484 is 484446981.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254527 + ... + 255270.

Almost surely, 2^189644484 is an apocalyptic number.

It is an amenable number.

189644484 is an abundant number, since it is smaller than the sum of its proper divisors (267134524).

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

189644484 is a wasteful number, since it uses less digits than its factorization.

189644484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509835 (or 509833 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 189644484 is about 13771.1467932050. The cubic root of 189644484 is about 574.5309182490.

The spelling of 189644484 in words is "one hundred eighty-nine million, six hundred forty-four thousand, four hundred eighty-four".