1268769705 has 32 divisors (see below), whose sum is σ = 2394882048. Its totient is φ = 561297600.

The previous prime is 1268769661. The next prime is 1268769713. The reversal of 1268769705 is 5079678621.

It is not a de Polignac number, because 1268769705 - 2¹⁹ = 1268245417 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 191641 + ... + 198150.

It is an arithmetic number, because the mean of its divisors is an integer number (74840064).

Almost surely, 2^1268769705 is an apocalyptic number.

1268769705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1268769705 is a deficient number, since it is larger than the sum of its proper divisors (1126112343).

1268769705 is a wasteful number, since it uses less digits than its factorization.

1268769705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389837.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 1268769705 is about 35619.7937248379. The cubic root of 1268769705 is about 1082.5823279910.

The spelling of 1268769705 in words is "one billion, two hundred sixty-eight million, seven hundred sixty-nine thousand, seven hundred five".