184540673809 has 2 divisors, whose sum is σ = 184540673810. Its totient is φ = 184540673808.

The previous prime is 184540673797. The next prime is 184540673827. The reversal of 184540673809 is 908376045481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94482464400 + 90058209409 = 307380^2 + 300097^2 .

It is an emirp because it is prime and its reverse (908376045481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 184540673809 - 2²⁹ = 184003802897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 184540673809.

It is not a weakly prime, because it can be changed into another prime (184540673839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92270336904 + 92270336905.

It is an arithmetic number, because the mean of its divisors is an integer number (92270336905).

Almost surely, 2^184540673809 is an apocalyptic number.

It is an amenable number.

184540673809 is a deficient number, since it is larger than the sum of its proper divisors (1).

184540673809 is an equidigital number, since it uses as much as digits as its factorization.

184540673809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 184540673809 in words is "one hundred eighty-four billion, five hundred forty million, six hundred seventy-three thousand, eight hundred nine".