1268753516 has 24 divisors (see below), whose sum is σ = 2245272960. Its totient is φ = 627264000.

The previous prime is 1268753513. The next prime is 1268753527. The reversal of 1268753516 is 6153578621.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1268753513) 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, 398780 + ... + 401948.

It is an arithmetic number, because the mean of its divisors is an integer number (93553040).

Almost surely, 2^1268753516 is an apocalyptic number.

It is an amenable number.

1268753516 is a deficient number, since it is larger than the sum of its proper divisors (976519444).

1268753516 is a wasteful number, since it uses less digits than its factorization.

1268753516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265 (or 4263 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 1268753516 is about 35619.5664768677. The cubic root of 1268753516 is about 1082.5777235305.

The spelling of 1268753516 in words is "one billion, two hundred sixty-eight million, seven hundred fifty-three thousand, five hundred sixteen".