1263417541 has 2 divisors, whose sum is σ = 1263417542. Its totient is φ = 1263417540.

The previous prime is 1263417511. The next prime is 1263417607. The reversal of 1263417541 is 1457143621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1207840516 + 55577025 = 34754^2 + 7455^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263417541 - 2¹¹ = 1263415493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1263417497 and 1263417506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263417511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631708770 + 631708771.

It is an arithmetic number, because the mean of its divisors is an integer number (631708771).

Almost surely, 2^1263417541 is an apocalyptic number.

It is an amenable number.

1263417541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263417541 is an equidigital number, since it uses as much as digits as its factorization.

1263417541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 1263417541 is about 35544.5852557039. The cubic root of 1263417541 is about 1081.0579313977.

The spelling of 1263417541 in words is "one billion, two hundred sixty-three million, four hundred seventeen thousand, five hundred forty-one".