1268196669 has 10 divisors (see below), whose sum is σ = 1894466750. Its totient is φ = 845464392.

The previous prime is 1268196659. The next prime is 1268196691. The reversal of 1268196669 is 9666918621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 960194169 + 308002500 = 30987^2 + 17550^2 .

It is not a de Polignac number, because 1268196669 - 2⁵ = 1268196637 is a prime.

It is a super-2 number, since 2×1268196669² = 3216645582525391122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268196659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7828294 + ... + 7828455.

It is an arithmetic number, because the mean of its divisors is an integer number (189446675).

Almost surely, 2^1268196669 is an apocalyptic number.

It is an amenable number.

1268196669 is a deficient number, since it is larger than the sum of its proper divisors (626270081).

1268196669 is an equidigital number, since it uses as much as digits as its factorization.

1268196669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15656761 (or 15656752 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 1268196669 is about 35611.7490303411. The cubic root of 1268196669 is about 1082.4193217700.

The spelling of 1268196669 in words is "one billion, two hundred sixty-eight million, one hundred ninety-six thousand, six hundred sixty-nine".