1263408353 has 2 divisors, whose sum is σ = 1263408354. Its totient is φ = 1263408352.

The previous prime is 1263408283. The next prime is 1263408361. The reversal of 1263408353 is 3538043621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1262878369 + 529984 = 35537^2 + 728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263408353 - 2²⁸ = 994972897 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263408373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631704176 + 631704177.

It is an arithmetic number, because the mean of its divisors is an integer number (631704177).

Almost surely, 2^1263408353 is an apocalyptic number.

It is an amenable number.

1263408353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263408353 is an equidigital number, since it uses as much as digits as its factorization.

1263408353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1263408353 is about 35544.4560093413. The cubic root of 1263408353 is about 1081.0553107850.

The spelling of 1263408353 in words is "one billion, two hundred sixty-three million, four hundred eight thousand, three hundred fifty-three".