1328103929 has 4 divisors (see below), whose sum is σ = 1334059776. Its totient is φ = 1322148084.

The previous prime is 1328103899. The next prime is 1328103941. The reversal of 1328103929 is 9293018231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9293018231 = 7 ⋅1327574033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328103929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1328103892 and 1328103901.

It is not an unprimeable number, because it can be changed into a prime (1328103979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2977589 + ... + 2978034.

It is an arithmetic number, because the mean of its divisors is an integer number (333514944).

Almost surely, 2^1328103929 is an apocalyptic number.

It is an amenable number.

1328103929 is a deficient number, since it is larger than the sum of its proper divisors (5955847).

1328103929 is an equidigital number, since it uses as much as digits as its factorization.

1328103929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955846.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1328103929 is about 36443.1602499015. The cubic root of 1328103929 is about 1099.2016049517.

The spelling of 1328103929 in words is "one billion, three hundred twenty-eight million, one hundred three thousand, nine hundred twenty-nine".