185682481560649 has 2 divisors, whose sum is σ = 185682481560650. Its totient is φ = 185682481560648.

The previous prime is 185682481560539. The next prime is 185682481560673. The reversal of 185682481560649 is 946065184286581.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182994744278025 + 2687737282624 = 13527555^2 + 1639432^2 .

It is an emirp because it is prime and its reverse (946065184286581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 185682481560649 - 2²³ = 185682473172041 is a prime.

It is not a weakly prime, because it can be changed into another prime (185682481560749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92841240780324 + 92841240780325.

It is an arithmetic number, because the mean of its divisors is an integer number (92841240780325).

Almost surely, 2^{185682481560649} is an apocalyptic number.

It is an amenable number.

185682481560649 is a deficient number, since it is larger than the sum of its proper divisors (1).

185682481560649 is an equidigital number, since it uses as much as digits as its factorization.

185682481560649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 796262400, while the sum is 73.

The spelling of 185682481560649 in words is "one hundred eighty-five trillion, six hundred eighty-two billion, four hundred eighty-one million, five hundred sixty thousand, six hundred forty-nine".