184389489 has 6 divisors (see below), whose sum is σ = 266340386. Its totient is φ = 122926320.

The previous prime is 184389481. The next prime is 184389493. The reversal of 184389489 is 984983481.

184389489 is a `hidden beast` number, since 1 + 84 + 3 + 89 + 489 = 666.

It can be written as a sum of positive squares in only one way, i.e., 161493264 + 22896225 = 12708^2 + 4785^2 .

It is not a de Polignac number, because 184389489 - 2³ = 184389481 is a prime.

It is a super-2 number, since 2×184389489² = 67998967307362242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (184389481) 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, 10243852 + ... + 10243869.

Almost surely, 2^184389489 is an apocalyptic number.

It is an amenable number.

184389489 is a deficient number, since it is larger than the sum of its proper divisors (81950897).

184389489 is a wasteful number, since it uses less digits than its factorization.

184389489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20487727 (or 20487724 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 184389489 is about 13579.0091317445. The cubic root of 184389489 is about 569.1744373714.

The spelling of 184389489 in words is "one hundred eighty-four million, three hundred eighty-nine thousand, four hundred eighty-nine".