1236104161 has 2 divisors, whose sum is σ = 1236104162. Its totient is φ = 1236104160.

The previous prime is 1236104159. The next prime is 1236104167. The reversal of 1236104161 is 1614016321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1220454225 + 15649936 = 34935^2 + 3956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1236104161 - 2¹ = 1236104159 is a prime.

Together with 1236104159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1236104167) 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, 618052080 + 618052081.

It is an arithmetic number, because the mean of its divisors is an integer number (618052081).

Almost surely, 2^1236104161 is an apocalyptic number.

It is an amenable number.

1236104161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1236104161 is an equidigital number, since it uses as much as digits as its factorization.

1236104161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1236104161 is about 35158.2730093502. The cubic root of 1236104161 is about 1073.2107712010.

The spelling of 1236104161 in words is "one billion, two hundred thirty-six million, one hundred four thousand, one hundred sixty-one".