1361213089 has 2 divisors, whose sum is σ = 1361213090. Its totient is φ = 1361213088.

The previous prime is 1361213047. The next prime is 1361213123. The reversal of 1361213089 is 9803121631.

It is an a-pointer prime, because the next prime (1361213123) can be obtained adding 1361213089 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1224440064 + 136773025 = 34992^2 + 11695^2 .

It is an emirp because it is prime and its reverse (9803121631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1361213089 - 2¹¹ = 1361211041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361213039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680606544 + 680606545.

It is an arithmetic number, because the mean of its divisors is an integer number (680606545).

Almost surely, 2^1361213089 is an apocalyptic number.

It is an amenable number.

1361213089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361213089 is an equidigital number, since it uses as much as digits as its factorization.

1361213089 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 34.

The square root of 1361213089 is about 36894.6214101731. The cubic root of 1361213089 is about 1108.2609700483.

The spelling of 1361213089 in words is "one billion, three hundred sixty-one million, two hundred thirteen thousand, eighty-nine".