1266463873 has 2 divisors, whose sum is σ = 1266463874. Its totient is φ = 1266463872.

The previous prime is 1266463837. The next prime is 1266463921. The reversal of 1266463873 is 3783646621.

It is the 14529-th star number.

Together with previous prime (1266463837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1078005889 + 188457984 = 32833^2 + 13728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266463873 - 2¹⁷ = 1266332801 is a prime.

It is a super-2 number, since 2×1266463873² = 3207861483228320258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1266463813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633231936 + 633231937.

It is an arithmetic number, because the mean of its divisors is an integer number (633231937).

Almost surely, 2^1266463873 is an apocalyptic number.

It is an amenable number.

1266463873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266463873 is an equidigital number, since it uses as much as digits as its factorization.

1266463873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The square root of 1266463873 is about 35587.4117210004. The cubic root of 1266463873 is about 1081.9261104748.

The spelling of 1266463873 in words is "one billion, two hundred sixty-six million, four hundred sixty-three thousand, eight hundred seventy-three".