1266416166 has 8 divisors (see below), whose sum is σ = 2532832344. Its totient is φ = 422138720.

The previous prime is 1266416153. The next prime is 1266416197. The reversal of 1266416166 is 6616146621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1266416166 is an admirable number.

It is a super-2 number, since 2×1266416166² = 3207619811012279112, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105534675 + ... + 105534686.

It is an arithmetic number, because the mean of its divisors is an integer number (316604043).

Almost surely, 2^1266416166 is an apocalyptic number.

1266416166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266416166 is a wasteful number, since it uses less digits than its factorization.

1266416166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211069366.

The product of its digits is 62208, while the sum is 39.

The square root of 1266416166 is about 35586.7414355403. The cubic root of 1266416166 is about 1081.9125251163.

The spelling of 1266416166 in words is "one billion, two hundred sixty-six million, four hundred sixteen thousand, one hundred sixty-six".