1983281329 has 12 divisors (see below), whose sum is σ = 2084973696. Its totient is φ = 1882981848.

The previous prime is 1983281323. The next prime is 1983281341. The reversal of 1983281329 is 9231823891.

It is a de Polignac number, because none of the positive numbers 2^k-1983281329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1983281323) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 442152 + ... + 446614.

It is an arithmetic number, because the mean of its divisors is an integer number (173747808).

Almost surely, 2^1983281329 is an apocalyptic number.

It is an amenable number.

1983281329 is a deficient number, since it is larger than the sum of its proper divisors (101692367).

1983281329 is an equidigital number, since it uses as much as digits as its factorization.

1983281329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764 (or 4625 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 1983281329 is about 44534.0468518189. The cubic root of 1983281329 is about 1256.4005209146.

The spelling of 1983281329 in words is "one billion, nine hundred eighty-three million, two hundred eighty-one thousand, three hundred twenty-nine".