1328263757 has 8 divisors (see below), whose sum is σ = 1389612672. Its totient is φ = 1268293600.

The previous prime is 1328263751. The next prime is 1328263759. The reversal of 1328263757 is 7573628231.

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 1328263757 - 2⁶ = 1328263693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328263751) 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, 342719 + ... + 346572.

It is an arithmetic number, because the mean of its divisors is an integer number (173701584).

Almost surely, 2^1328263757 is an apocalyptic number.

It is an amenable number.

1328263757 is a deficient number, since it is larger than the sum of its proper divisors (61348915).

1328263757 is an equidigital number, since it uses as much as digits as its factorization.

1328263757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689379.

The product of its digits is 423360, while the sum is 44.

The square root of 1328263757 is about 36445.3530233965. The cubic root of 1328263757 is about 1099.2456969195.

The spelling of 1328263757 in words is "one billion, three hundred twenty-eight million, two hundred sixty-three thousand, seven hundred fifty-seven".