189289544 has 16 divisors (see below), whose sum is σ = 355257900. Its totient is φ = 94554112.

The previous prime is 189289519. The next prime is 189289547. The reversal of 189289544 is 445982981.

It can be written as a sum of positive squares in 2 ways, for example, as 157502500 + 31787044 = 12550^2 + 5638^2 .

It is a junction number, because it is equal to n+sod(n) for n = 189289492 and 189289501.

It is not an unprimeable number, because it can be changed into a prime (189289547) 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, 2009 + ... + 19560.

Almost surely, 2^189289544 is an apocalyptic number.

It is an amenable number.

189289544 is a deficient number, since it is larger than the sum of its proper divisors (165968356).

189289544 is a wasteful number, since it uses less digits than its factorization.

189289544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22672 (or 22668 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 189289544 is about 13758.2536682531. The cubic root of 189289544 is about 574.1722623152.

The spelling of 189289544 in words is "one hundred eighty-nine million, two hundred eighty-nine thousand, five hundred forty-four".