1328072843 has 4 divisors (see below), whose sum is σ = 1356329760. Its totient is φ = 1299815928.

The previous prime is 1328072819. The next prime is 1328072927. The reversal of 1328072843 is 3482708231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3482708231 = 23 ⋅151422097.

It is a cyclic number.

It is not a de Polignac number, because 1328072843 - 2¹⁴ = 1328056459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1328072797 and 1328072806.

It is not an unprimeable number, because it can be changed into a prime (1328072803) 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, 14128388 + ... + 14128481.

It is an arithmetic number, because the mean of its divisors is an integer number (339082440).

Almost surely, 2^1328072843 is an apocalyptic number.

1328072843 is a deficient number, since it is larger than the sum of its proper divisors (28256917).

1328072843 is an equidigital number, since it uses as much as digits as its factorization.

1328072843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28256916.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1328072843 is about 36442.7337476211. The cubic root of 1328072843 is about 1099.1930288036.

The spelling of 1328072843 in words is "one billion, three hundred twenty-eight million, seventy-two thousand, eight hundred forty-three".