1286222867 has 2 divisors, whose sum is σ = 1286222868. Its totient is φ = 1286222866.

The previous prime is 1286222789. The next prime is 1286222869. The reversal of 1286222867 is 7682226821.

It is a strong prime.

It is an emirp because it is prime and its reverse (7682226821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1286222867 - 2¹⁸ = 1285960723 is a prime.

Together with 1286222869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1286222869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643111433 + 643111434.

It is an arithmetic number, because the mean of its divisors is an integer number (643111434).

Almost surely, 2^1286222867 is an apocalyptic number.

1286222867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1286222867 is an equidigital number, since it uses as much as digits as its factorization.

1286222867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 44.

The square root of 1286222867 is about 35863.9494060540. The cubic root of 1286222867 is about 1087.5237299970.

The spelling of 1286222867 in words is "one billion, two hundred eighty-six million, two hundred twenty-two thousand, eight hundred sixty-seven".