1263143513 has 2 divisors, whose sum is σ = 1263143514. Its totient is φ = 1263143512.

The previous prime is 1263143507. The next prime is 1263143549. The reversal of 1263143513 is 3153413621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1247714329 + 15429184 = 35323^2 + 3928^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263143513 - 2⁸ = 1263143257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263143593) 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, 631571756 + 631571757.

It is an arithmetic number, because the mean of its divisors is an integer number (631571757).

Almost surely, 2^1263143513 is an apocalyptic number.

It is an amenable number.

1263143513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263143513 is an equidigital number, since it uses as much as digits as its factorization.

1263143513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 29.

The square root of 1263143513 is about 35540.7303385848. The cubic root of 1263143513 is about 1080.9797673299.

The spelling of 1263143513 in words is "one billion, two hundred sixty-three million, one hundred forty-three thousand, five hundred thirteen".