1300011961 has 2 divisors, whose sum is σ = 1300011962. Its totient is φ = 1300011960.

The previous prime is 1300011953. The next prime is 1300012019. The reversal of 1300011961 is 1691100031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1230606400 + 69405561 = 35080^2 + 8331^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300011961 - 2³ = 1300011953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1300011941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650005980 + 650005981.

It is an arithmetic number, because the mean of its divisors is an integer number (650005981).

Almost surely, 2^1300011961 is an apocalyptic number.

It is an amenable number.

1300011961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300011961 is an equidigital number, since it uses as much as digits as its factorization.

1300011961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1300011961 is about 36055.6786234845. The cubic root of 1300011961 is about 1091.3962302689.

Adding to 1300011961 its reverse (1691100031), we get a palindrome (2991111992).

The spelling of 1300011961 in words is "one billion, three hundred million, eleven thousand, nine hundred sixty-one".