1268756013 has 16 divisors (see below), whose sum is σ = 1960574976. Its totient is φ = 714791280.

The previous prime is 1268755997. The next prime is 1268756017. The reversal of 1268756013 is 3106578621.

It is not a de Polignac number, because 1268756013 - 2⁴ = 1268755997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268756017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423981 + ... + 426962.

It is an arithmetic number, because the mean of its divisors is an integer number (122535936).

Almost surely, 2^1268756013 is an apocalyptic number.

It is an amenable number.

1268756013 is a deficient number, since it is larger than the sum of its proper divisors (691818963).

1268756013 is an equidigital number, since it uses as much as digits as its factorization.

1268756013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851024.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1268756013 is about 35619.6015278105. The cubic root of 1268756013 is about 1082.5784337275.

The spelling of 1268756013 in words is "one billion, two hundred sixty-eight million, seven hundred fifty-six thousand, thirteen".