1361118263 has 2 divisors, whose sum is σ = 1361118264. Its totient is φ = 1361118262.

The previous prime is 1361118247. The next prime is 1361118299. The reversal of 1361118263 is 3628111631.

It is a weak prime.

It is an emirp because it is prime and its reverse (3628111631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1361118263 - 2⁴ = 1361118247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361118203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680559131 + 680559132.

It is an arithmetic number, because the mean of its divisors is an integer number (680559132).

Almost surely, 2^1361118263 is an apocalyptic number.

1361118263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361118263 is an equidigital number, since it uses as much as digits as its factorization.

1361118263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 1361118263 is about 36893.3362953257. The cubic root of 1361118263 is about 1108.2352345735.

Adding to 1361118263 its reverse (3628111631), we get a palindrome (4989229894).

The spelling of 1361118263 in words is "one billion, three hundred sixty-one million, one hundred eighteen thousand, two hundred sixty-three".