1263253753 has 2 divisors, whose sum is σ = 1263253754. Its totient is φ = 1263253752.

The previous prime is 1263253721. The next prime is 1263253777. The reversal of 1263253753 is 3573523621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749007424 + 514246329 = 27368^2 + 22677^2 .

It is an emirp because it is prime and its reverse (3573523621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1263253753 - 2⁵ = 1263253721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263253793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631626876 + 631626877.

It is an arithmetic number, because the mean of its divisors is an integer number (631626877).

Almost surely, 2^1263253753 is an apocalyptic number.

It is an amenable number.

1263253753 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263253753 is an equidigital number, since it uses as much as digits as its factorization.

1263253753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 37.

The square root of 1263253753 is about 35542.2812014086. The cubic root of 1263253753 is about 1081.0112136757.

The spelling of 1263253753 in words is "one billion, two hundred sixty-three million, two hundred fifty-three thousand, seven hundred fifty-three".