1268616757 has 8 divisors (see below), whose sum is σ = 1335852000. Its totient is φ = 1201428144.

The previous prime is 1268616683. The next prime is 1268616779. The reversal of 1268616757 is 7576168621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1268616757 - 2¹⁵ = 1268583989 is a prime.

It is a super-2 number, since 2×1268616757² = 3218776952282394098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1268616757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268616787) 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 7 ways as a sum of consecutive naturals, for example, 53619 + ... + 73567.

It is an arithmetic number, because the mean of its divisors is an integer number (166981500).

Almost surely, 2^1268616757 is an apocalyptic number.

It is an amenable number.

1268616757 is a deficient number, since it is larger than the sum of its proper divisors (67235243).

1268616757 is a wasteful number, since it uses less digits than its factorization.

1268616757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23315.

The product of its digits is 846720, while the sum is 49.

The square root of 1268616757 is about 35617.6467077768. The cubic root of 1268616757 is about 1082.5388250986.

The spelling of 1268616757 in words is "one billion, two hundred sixty-eight million, six hundred sixteen thousand, seven hundred fifty-seven".