1213648603 has 2 divisors, whose sum is σ = 1213648604. Its totient is φ = 1213648602.

The previous prime is 1213648549. The next prime is 1213648607. The reversal of 1213648603 is 3068463121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213648603 - 2¹⁷ = 1213517531 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213648607) 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, 606824301 + 606824302.

It is an arithmetic number, because the mean of its divisors is an integer number (606824302).

Almost surely, 2^1213648603 is an apocalyptic number.

1213648603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213648603 is an equidigital number, since it uses as much as digits as its factorization.

1213648603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 1213648603 is about 34837.4597667511. The cubic root of 1213648603 is about 1066.6722252423.

The spelling of 1213648603 in words is "one billion, two hundred thirteen million, six hundred forty-eight thousand, six hundred three".