1361436061 has 2 divisors, whose sum is σ = 1361436062. Its totient is φ = 1361436060.

The previous prime is 1361436049. The next prime is 1361436101. The reversal of 1361436061 is 1606341631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1251815161 + 109620900 = 35381^2 + 10470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361436061 - 2¹³ = 1361427869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361436161) 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, 680718030 + 680718031.

It is an arithmetic number, because the mean of its divisors is an integer number (680718031).

Almost surely, 2^1361436061 is an apocalyptic number.

It is an amenable number.

1361436061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361436061 is an equidigital number, since it uses as much as digits as its factorization.

1361436061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1361436061 is about 36897.6430277057. The cubic root of 1361436061 is about 1108.3214792308.

Adding to 1361436061 its reverse (1606341631), we get a palindrome (2967777692).

The spelling of 1361436061 in words is "one billion, three hundred sixty-one million, four hundred thirty-six thousand, sixty-one".