1268751533 has 8 divisors (see below), whose sum is σ = 1450788480. Its totient is φ = 1086911280.

The previous prime is 1268751527. The next prime is 1268751559. The reversal of 1268751533 is 3351578621.

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

It is not a de Polignac number, because 1268751533 - 2²⁰ = 1267702957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268751503) 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 7 ways as a sum of consecutive naturals, for example, 35078 + ... + 61383.

It is an arithmetic number, because the mean of its divisors is an integer number (181348560).

Almost surely, 2^1268751533 is an apocalyptic number.

It is an amenable number.

1268751533 is a deficient number, since it is larger than the sum of its proper divisors (182036947).

1268751533 is an equidigital number, since it uses as much as digits as its factorization.

1268751533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98347.

The product of its digits is 151200, while the sum is 41.

The square root of 1268751533 is about 35619.5386410324. The cubic root of 1268751533 is about 1082.5771595248.

The spelling of 1268751533 in words is "one billion, two hundred sixty-eight million, seven hundred fifty-one thousand, five hundred thirty-three".