1263112399 has 2 divisors, whose sum is σ = 1263112400. Its totient is φ = 1263112398.

The previous prime is 1263112373. The next prime is 1263112441. The reversal of 1263112399 is 9932113621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1263112399 - 2²¹ = 1261015247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263152399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631556199 + 631556200.

It is an arithmetic number, because the mean of its divisors is an integer number (631556200).

Almost surely, 2^1263112399 is an apocalyptic number.

1263112399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263112399 is an equidigital number, since it uses as much as digits as its factorization.

1263112399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 1263112399 is about 35540.2926127515. The cubic root of 1263112399 is about 1080.9708916215.

The spelling of 1263112399 in words is "one billion, two hundred sixty-three million, one hundred twelve thousand, three hundred ninety-nine".