183827561 has 2 divisors, whose sum is σ = 183827562. Its totient is φ = 183827560.

The previous prime is 183827557. The next prime is 183827563. The reversal of 183827561 is 165728381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183087961 + 739600 = 13531^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 183827561 - 2² = 183827557 is a prime.

Together with 183827563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (183827563) 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, 91913780 + 91913781.

It is an arithmetic number, because the mean of its divisors is an integer number (91913781).

Almost surely, 2^183827561 is an apocalyptic number.

It is an amenable number.

183827561 is a deficient number, since it is larger than the sum of its proper divisors (1).

183827561 is an equidigital number, since it uses as much as digits as its factorization.

183827561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 183827561 is about 13558.3022904787. The cubic root of 183827561 is about 568.5956616037.

The spelling of 183827561 in words is "one hundred eighty-three million, eight hundred twenty-seven thousand, five hundred sixty-one".