1268127859 has 2 divisors, whose sum is σ = 1268127860. Its totient is φ = 1268127858.

The previous prime is 1268127857. The next prime is 1268127871. The reversal of 1268127859 is 9587218621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1268127859 - 2¹ = 1268127857 is a prime.

Together with 1268127857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1268127857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634063929 + 634063930.

It is an arithmetic number, because the mean of its divisors is an integer number (634063930).

Almost surely, 2^1268127859 is an apocalyptic number.

1268127859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268127859 is an equidigital number, since it uses as much as digits as its factorization.

1268127859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 49.

The square root of 1268127859 is about 35610.7829034971. The cubic root of 1268127859 is about 1082.3997447274.

The spelling of 1268127859 in words is "one billion, two hundred sixty-eight million, one hundred twenty-seven thousand, eight hundred fifty-nine".