1328102643 has 16 divisors (see below), whose sum is σ = 2026953216. Its totient is φ = 757724160.

The previous prime is 1328102617. The next prime is 1328102653. The reversal of 1328102643 is 3462018231.

It is not a de Polignac number, because 1328102643 - 2⁶ = 1328102579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1328102643.

It is not an unprimeable number, because it can be changed into a prime (1328102653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35871 + ... + 62792.

It is an arithmetic number, because the mean of its divisors is an integer number (126684576).

Almost surely, 2^1328102643 is an apocalyptic number.

1328102643 is a deficient number, since it is larger than the sum of its proper divisors (698850573).

1328102643 is an equidigital number, since it uses as much as digits as its factorization.

1328102643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99314.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1328102643 is about 36443.1426059828. The cubic root of 1328102643 is about 1099.2012501668.

The spelling of 1328102643 in words is "one billion, three hundred twenty-eight million, one hundred two thousand, six hundred forty-three".