1266168047 has 2 divisors, whose sum is σ = 1266168048. Its totient is φ = 1266168046.

The previous prime is 1266168031. The next prime is 1266168049. The reversal of 1266168047 is 7408616621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1266168047 - 2⁴ = 1266168031 is a prime.

Together with 1266168049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1266167995 and 1266168013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266168049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633084023 + 633084024.

It is an arithmetic number, because the mean of its divisors is an integer number (633084024).

Almost surely, 2^1266168047 is an apocalyptic number.

1266168047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266168047 is an equidigital number, since it uses as much as digits as its factorization.

1266168047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1266168047 is about 35583.2551490164. The cubic root of 1266168047 is about 1081.8418636191.

It can be divided in two parts, 12661 and 68047, that added together give a palindrome (80708).

The spelling of 1266168047 in words is "one billion, two hundred sixty-six million, one hundred sixty-eight thousand, forty-seven".