1266149267 has 2 divisors, whose sum is σ = 1266149268. Its totient is φ = 1266149266.

The previous prime is 1266149257. The next prime is 1266149299. The reversal of 1266149267 is 7629416621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1266149267 - 2¹⁸ = 1265887123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1266149237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633074633 + 633074634.

It is an arithmetic number, because the mean of its divisors is an integer number (633074634).

Almost surely, 2^1266149267 is an apocalyptic number.

1266149267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266149267 is an equidigital number, since it uses as much as digits as its factorization.

1266149267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 1266149267 is about 35582.9912598702. The cubic root of 1266149267 is about 1081.8365149108.

The spelling of 1266149267 in words is "one billion, two hundred sixty-six million, one hundred forty-nine thousand, two hundred sixty-seven".