1263152899 has 2 divisors, whose sum is σ = 1263152900. Its totient is φ = 1263152898.

The previous prime is 1263152873. The next prime is 1263152929. The reversal of 1263152899 is 9982513621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1263152899 - 2⁵ = 1263152867 is a prime.

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, 631576449 + 631576450.

It is an arithmetic number, because the mean of its divisors is an integer number (631576450).

Almost surely, 2^1263152899 is an apocalyptic number.

1263152899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263152899 is an equidigital number, since it uses as much as digits as its factorization.

1263152899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 46.

The square root of 1263152899 is about 35540.8623840221. The cubic root of 1263152899 is about 1080.9824447905.

The spelling of 1263152899 in words is "one billion, two hundred sixty-three million, one hundred fifty-two thousand, eight hundred ninety-nine".