1318600663 has 2 divisors, whose sum is σ = 1318600664. Its totient is φ = 1318600662.

The previous prime is 1318600601. The next prime is 1318600721. The reversal of 1318600663 is 3660068131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1318600663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1318600163) 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, 659300331 + 659300332.

It is an arithmetic number, because the mean of its divisors is an integer number (659300332).

Almost surely, 2^1318600663 is an apocalyptic number.

1318600663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318600663 is an equidigital number, since it uses as much as digits as its factorization.

1318600663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1318600663 is about 36312.5414010091. The cubic root of 1318600663 is about 1096.5735424826.

Adding to 1318600663 its reverse (3660068131), we get a palindrome (4978668794).

The spelling of 1318600663 in words is "one billion, three hundred eighteen million, six hundred thousand, six hundred sixty-three".