184691216089 has 2 divisors, whose sum is σ = 184691216090. Its totient is φ = 184691216088.

The previous prime is 184691216069. The next prime is 184691216113. The reversal of 184691216089 is 980612196481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130224991689 + 54466224400 = 360867^2 + 233380^2 .

It is an emirp because it is prime and its reverse (980612196481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 184691216089 - 2⁵ = 184691216057 is a prime.

It is a super-2 number, since 2×184691216089² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (184691216029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92345608044 + 92345608045.

It is an arithmetic number, because the mean of its divisors is an integer number (92345608045).

Almost surely, 2^184691216089 is an apocalyptic number.

It is an amenable number.

184691216089 is a deficient number, since it is larger than the sum of its proper divisors (1).

184691216089 is an equidigital number, since it uses as much as digits as its factorization.

184691216089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 184691216089 in words is "one hundred eighty-four billion, six hundred ninety-one million, two hundred sixteen thousand, eighty-nine".