1266910848 has 128 divisors (see below), whose sum is σ = 4273392000. Its totient is φ = 361967616.

The previous prime is 1266910837. The next prime is 1266910877. The reversal of 1266910848 is 8480196621.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1993 + ... + 50376.

It is an arithmetic number, because the mean of its divisors is an integer number (33385875).

Almost surely, 2^1266910848 is an apocalyptic number.

1266910848 is a gapful number since it is divisible by the number (18) 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 1266910848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2136696000).

1266910848 is an abundant number, since it is smaller than the sum of its proper divisors (3006481152).

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

1266910848 is an equidigital number, since it uses as much as digits as its factorization.

1266910848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52399 (or 52381 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1266910848 is about 35593.6911263780. The cubic root of 1266910848 is about 1082.0533774404.

The spelling of 1266910848 in words is "one billion, two hundred sixty-six million, nine hundred ten thousand, eight hundred forty-eight".