1266926892 has 96 divisors (see below), whose sum is σ = 3692666880. Its totient is φ = 328441920.

The previous prime is 1266926891. The next prime is 1266926929. The reversal of 1266926892 is 2986296621.

It is not an unprimeable number, because it can be changed into a prime (1266926891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 663403 + ... + 665309.

It is an arithmetic number, because the mean of its divisors is an integer number (38465280).

Almost surely, 2^1266926892 is an apocalyptic number.

1266926892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266926892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846333440).

1266926892 is an abundant number, since it is smaller than the sum of its proper divisors (2425739988).

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

1266926892 is a wasteful number, since it uses less digits than its factorization.

1266926892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651 (or 2649 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 1266926892 is about 35593.9165026834. The cubic root of 1266926892 is about 1082.0579450838.

The spelling of 1266926892 in words is "one billion, two hundred sixty-six million, nine hundred twenty-six thousand, eight hundred ninety-two".