1266741786 has 32 divisors (see below), whose sum is σ = 2553550848. Its totient is φ = 418912560.

The previous prime is 1266741769. The next prime is 1266741787. The reversal of 1266741786 is 6871476621.

It is not an unprimeable number, because it can be changed into a prime (1266741787) 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 15 ways as a sum of consecutive naturals, for example, 968545 + ... + 969851.

It is an arithmetic number, because the mean of its divisors is an integer number (79798464).

Almost surely, 2^1266741786 is an apocalyptic number.

1266741786 is an abundant number, since it is smaller than the sum of its proper divisors (1286809062).

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

1266741786 is a wasteful number, since it uses less digits than its factorization.

1266741786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466.

The product of its digits is 677376, while the sum is 48.

The square root of 1266741786 is about 35591.3161599849. The cubic root of 1266741786 is about 1082.0052440230.

The spelling of 1266741786 in words is "one billion, two hundred sixty-six million, seven hundred forty-one thousand, seven hundred eighty-six".