1980328033 has 4 divisors (see below), whose sum is σ = 2022462720. Its totient is φ = 1938193348.

The previous prime is 1980327971. The next prime is 1980328057. The reversal of 1980328033 is 3308230891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1980328033 - 2²⁵ = 1946773601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1980327983 and 1980328001.

It is not an unprimeable number, because it can be changed into a prime (1980328433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21067273 + ... + 21067366.

It is an arithmetic number, because the mean of its divisors is an integer number (505615680).

Almost surely, 2^1980328033 is an apocalyptic number.

It is an amenable number.

1980328033 is a deficient number, since it is larger than the sum of its proper divisors (42134687).

1980328033 is an equidigital number, since it uses as much as digits as its factorization.

1980328033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42134686.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1980328033 is about 44500.8767666436. The cubic root of 1980328033 is about 1255.7765775069.

The spelling of 1980328033 in words is "one billion, nine hundred eighty million, three hundred twenty-eight thousand, thirty-three".