1266468331 has 4 divisors (see below), whose sum is σ = 1266559200. Its totient is φ = 1266377464.

The previous prime is 1266468323. The next prime is 1266468361. The reversal of 1266468331 is 1338646621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1266468331 - 2³ = 1266468323 is a prime.

It is a super-2 number, since 2×1266468331² = 3207884066851851122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266468361) by changing a digit.

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, 19651 + ... + 54028.

It is an arithmetic number, because the mean of its divisors is an integer number (316639800).

Almost surely, 2^1266468331 is an apocalyptic number.

1266468331 is a deficient number, since it is larger than the sum of its proper divisors (90869).

1266468331 is an equidigital number, since it uses as much as digits as its factorization.

1266468331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90868.

The product of its digits is 124416, while the sum is 40.

The square root of 1266468331 is about 35587.4743554526. The cubic root of 1266468331 is about 1081.9273799467.

The spelling of 1266468331 in words is "one billion, two hundred sixty-six million, four hundred sixty-eight thousand, three hundred thirty-one".