1328541842 has 4 divisors (see below), whose sum is σ = 1992812766. Its totient is φ = 664270920.

The previous prime is 1328541839. The next prime is 1328541899. The reversal of 1328541842 is 2481458231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2481458231 = 7 ⋅354494033.

It can be written as a sum of positive squares in only one way, i.e., 1259469121 + 69072721 = 35489^2 + 8311^2 .

It is a super-3 number, since 3×1328541842³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1328541796 and 1328541805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332135459 + ... + 332135462.

Almost surely, 2^1328541842 is an apocalyptic number.

1328541842 is a deficient number, since it is larger than the sum of its proper divisors (664270924).

1328541842 is an equidigital number, since it uses as much as digits as its factorization.

1328541842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664270923.

The product of its digits is 61440, while the sum is 38.

The square root of 1328541842 is about 36449.1679191720. The cubic root of 1328541842 is about 1099.3224041769.

The spelling of 1328541842 in words is "one billion, three hundred twenty-eight million, five hundred forty-one thousand, eight hundred forty-two".