1266968754 has 144 divisors (see below), whose sum is σ = 3105648000. Its totient is φ = 372043584.

The previous prime is 1266968753. The next prime is 1266968779. The reversal of 1266968754 is 4578696621.

It is a super-2 number, since 2×1266968754² = 3210419647224625032, which contains 22 as substring.

Its product of digits (4354560) is a multiple of the sum of its prime divisors (243).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266968754.

It is not an unprimeable number, because it can be changed into a prime (1266968753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8503072 + ... + 8503220.

It is an arithmetic number, because the mean of its divisors is an integer number (21567000).

Almost surely, 2^1266968754 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266968754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1552824000).

1266968754 is an abundant number, since it is smaller than the sum of its proper divisors (1838679246).

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

1266968754 is a wasteful number, since it uses less digits than its factorization.

1266968754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 243 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1266968754 is about 35594.5045477529. The cubic root of 1266968754 is about 1082.0698627962.

The spelling of 1266968754 in words is "one billion, two hundred sixty-six million, nine hundred sixty-eight thousand, seven hundred fifty-four".