1328712959 has 24 divisors (see below), whose sum is σ = 1631203200. Its totient is φ = 1076166000.

The previous prime is 1328712941. The next prime is 1328712961. The reversal of 1328712959 is 9592178231.

It is a happy number.

It is not a de Polignac number, because 1328712959 - 2¹⁶ = 1328647423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328712059) 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 23 ways as a sum of consecutive naturals, for example, 407084 + ... + 410334.

It is an arithmetic number, because the mean of its divisors is an integer number (67966800).

Almost surely, 2^1328712959 is an apocalyptic number.

1328712959 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1328712959 is a deficient number, since it is larger than the sum of its proper divisors (302490241).

1328712959 is a wasteful number, since it uses less digits than its factorization.

1328712959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723 (or 3716 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 1328712959 is about 36451.5151811279. The cubic root of 1328712959 is about 1099.3695999495.

The spelling of 1328712959 in words is "one billion, three hundred twenty-eight million, seven hundred twelve thousand, nine hundred fifty-nine".