1268681169 has 32 divisors (see below), whose sum is σ = 1998536704. Its totient is φ = 700539840.

The previous prime is 1268681153. The next prime is 1268681191. The reversal of 1268681169 is 9611868621.

It is not a de Polignac number, because 1268681169 - 2⁴ = 1268681153 is a prime.

It is a super-2 number, since 2×1268681169² = 3219103817150413122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1268681269) 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, 710652 + ... + 712434.

It is an arithmetic number, because the mean of its divisors is an integer number (62454272).

Almost surely, 2^1268681169 is an apocalyptic number.

It is an amenable number.

1268681169 is a deficient number, since it is larger than the sum of its proper divisors (729855535).

1268681169 is a wasteful number, since it uses less digits than its factorization.

1268681169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917.

The product of its digits is 248832, while the sum is 48.

The square root of 1268681169 is about 35618.5509110070. The cubic root of 1268681169 is about 1082.5571461848.

The spelling of 1268681169 in words is "one billion, two hundred sixty-eight million, six hundred eighty-one thousand, one hundred sixty-nine".