1263158587 has 2 divisors, whose sum is σ = 1263158588. Its totient is φ = 1263158586.

The previous prime is 1263158569. The next prime is 1263158653. The reversal of 1263158587 is 7858513621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1263158587 - 2¹⁹ = 1262634299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1263158387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631579293 + 631579294.

It is an arithmetic number, because the mean of its divisors is an integer number (631579294).

Almost surely, 2^1263158587 is an apocalyptic number.

1263158587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263158587 is an equidigital number, since it uses as much as digits as its factorization.

1263158587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 46.

The square root of 1263158587 is about 35540.9424045002. The cubic root of 1263158587 is about 1080.9840673492.

The spelling of 1263158587 in words is "one billion, two hundred sixty-three million, one hundred fifty-eight thousand, five hundred eighty-seven".