1263786353 has 2 divisors, whose sum is σ = 1263786354. Its totient is φ = 1263786352.

The previous prime is 1263786347. The next prime is 1263786481. The reversal of 1263786353 is 3536873621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688170289 + 575616064 = 26233^2 + 23992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1263786353 - 2¹² = 1263782257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263786343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631893176 + 631893177.

It is an arithmetic number, because the mean of its divisors is an integer number (631893177).

Almost surely, 2^1263786353 is an apocalyptic number.

It is an amenable number.

1263786353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263786353 is an equidigital number, since it uses as much as digits as its factorization.

1263786353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 1263786353 is about 35549.7728966023. The cubic root of 1263786353 is about 1081.1631139244.

The spelling of 1263786353 in words is "one billion, two hundred sixty-three million, seven hundred eighty-six thousand, three hundred fifty-three".