1266163429 has 2 divisors, whose sum is σ = 1266163430. Its totient is φ = 1266163428.

The previous prime is 1266163391. The next prime is 1266163471. The reversal of 1266163429 is 9243616621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198890625 + 67272804 = 34625^2 + 8202^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266163429 - 2⁹ = 1266162917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1266163391 and 1266163400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266163489) 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, 633081714 + 633081715.

It is an arithmetic number, because the mean of its divisors is an integer number (633081715).

Almost surely, 2^1266163429 is an apocalyptic number.

It is an amenable number.

1266163429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266163429 is an equidigital number, since it uses as much as digits as its factorization.

1266163429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 1266163429 is about 35583.1902588849. The cubic root of 1266163429 is about 1081.8405483772.

The spelling of 1266163429 in words is "one billion, two hundred sixty-six million, one hundred sixty-three thousand, four hundred twenty-nine".