184668989 has 2 divisors, whose sum is σ = 184668990. Its totient is φ = 184668988.

The previous prime is 184668959. The next prime is 184669003. The reversal of 184668989 is 989866481.

184668989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180499225 + 4169764 = 13435^2 + 2042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-184668989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (184668919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92334494 + 92334495.

It is an arithmetic number, because the mean of its divisors is an integer number (92334495).

Almost surely, 2^184668989 is an apocalyptic number.

It is an amenable number.

184668989 is a deficient number, since it is larger than the sum of its proper divisors (1).

184668989 is an equidigital number, since it uses as much as digits as its factorization.

184668989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 59.

The square root of 184668989 is about 13589.2968545102. The cubic root of 184668989 is about 569.4618795372.

The spelling of 184668989 in words is "one hundred eighty-four million, six hundred sixty-eight thousand, nine hundred eighty-nine".