1263344629 has 2 divisors, whose sum is σ = 1263344630. Its totient is φ = 1263344628.

The previous prime is 1263344609. The next prime is 1263344651. The reversal of 1263344629 is 9264433621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 912644100 + 350700529 = 30210^2 + 18727^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263344629 - 2⁵ = 1263344597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1263344591 and 1263344600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263344609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631672314 + 631672315.

It is an arithmetic number, because the mean of its divisors is an integer number (631672315).

Almost surely, 2^1263344629 is an apocalyptic number.

It is an amenable number.

1263344629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263344629 is an equidigital number, since it uses as much as digits as its factorization.

1263344629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 40.

The square root of 1263344629 is about 35543.5595994549. The cubic root of 1263344629 is about 1081.0371349970.

The spelling of 1263344629 in words is "one billion, two hundred sixty-three million, three hundred forty-four thousand, six hundred twenty-nine".