1328541843 has 4 divisors (see below), whose sum is σ = 1771389128. Its totient is φ = 885694560.

The previous prime is 1328541839. The next prime is 1328541899. The reversal of 1328541843 is 3481458231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3481458231 = 3 ⋅1160486077.

It is not a de Polignac number, because 1328541843 - 2² = 1328541839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328541343) 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, 221423638 + ... + 221423643.

It is an arithmetic number, because the mean of its divisors is an integer number (442847282).

Almost surely, 2^1328541843 is an apocalyptic number.

1328541843 is a deficient number, since it is larger than the sum of its proper divisors (442847285).

1328541843 is an equidigital number, since it uses as much as digits as its factorization.

1328541843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442847284.

The product of its digits is 92160, while the sum is 39.

The square root of 1328541843 is about 36449.1679328898. The cubic root of 1328541843 is about 1099.3224044527.

The spelling of 1328541843 in words is "one billion, three hundred twenty-eight million, five hundred forty-one thousand, eight hundred forty-three".