1268016456 has 32 divisors (see below), whose sum is σ = 3622904640. Its totient is φ = 362290368.

The previous prime is 1268016443. The next prime is 1268016457. The reversal of 1268016456 is 6546108621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1268016457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3773691 + ... + 3774026.

It is an arithmetic number, because the mean of its divisors is an integer number (113215770).

Almost surely, 2^1268016456 is an apocalyptic number.

It is an amenable number.

1268016456 is an abundant number, since it is smaller than the sum of its proper divisors (2354888184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1268016456 is a wasteful number, since it uses less digits than its factorization.

1268016456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7547733 (or 7547729 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1268016456 is about 35609.2186940405. The cubic root of 1268016456 is about 1082.3680481050.

The spelling of 1268016456 in words is "one billion, two hundred sixty-eight million, sixteen thousand, four hundred fifty-six".