1329517983 has 4 divisors (see below), whose sum is σ = 1772690648. Its totient is φ = 886345320.

The previous prime is 1329517949. The next prime is 1329517991. The reversal of 1329517983 is 3897159231.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1329517983 - 2⁸ = 1329517727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329517933) 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, 221586328 + ... + 221586333.

It is an arithmetic number, because the mean of its divisors is an integer number (443172662).

Almost surely, 2^1329517983 is an apocalyptic number.

1329517983 is a deficient number, since it is larger than the sum of its proper divisors (443172665).

1329517983 is an equidigital number, since it uses as much as digits as its factorization.

1329517983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443172664.

The product of its digits is 408240, while the sum is 48.

The square root of 1329517983 is about 36462.5559032825. Note that the first 3 decimals coincide. The cubic root of 1329517983 is about 1099.5915792296.

The spelling of 1329517983 in words is "one billion, three hundred twenty-nine million, five hundred seventeen thousand, nine hundred eighty-three".