1361836849 has 2 divisors, whose sum is σ = 1361836850. Its totient is φ = 1361836848.

The previous prime is 1361836813. The next prime is 1361836919. The reversal of 1361836849 is 9486381631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 895924624 + 465912225 = 29932^2 + 21585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361836849 - 2¹¹ = 1361834801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361836249) 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, 680918424 + 680918425.

It is an arithmetic number, because the mean of its divisors is an integer number (680918425).

Almost surely, 2^1361836849 is an apocalyptic number.

It is an amenable number.

1361836849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361836849 is an equidigital number, since it uses as much as digits as its factorization.

1361836849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The square root of 1361836849 is about 36903.0737066711. The cubic root of 1361836849 is about 1108.4302267462.

The spelling of 1361836849 in words is "one billion, three hundred sixty-one million, eight hundred thirty-six thousand, eight hundred forty-nine".