1980133 has 4 divisors (see below), whose sum is σ = 2017548. Its totient is φ = 1942720.

The previous prime is 1980113. The next prime is 1980169. The reversal of 1980133 is 3310891.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1399489 + 580644 = 1183^2 + 762^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980133 - 2⁵ = 1980101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1980098 and 1980107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980103) 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, 18628 + ... + 18733.

It is an arithmetic number, because the mean of its divisors is an integer number (504387).

2^1980133 is an apocalyptic number.

It is an amenable number.

1980133 is a deficient number, since it is larger than the sum of its proper divisors (37415).

1980133 is an equidigital number, since it uses as much as digits as its factorization.

1980133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37414.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1980133 is about 1407.1719866456. The cubic root of 1980133 is about 125.5735351018.

The spelling of 1980133 in words is "one million, nine hundred eighty thousand, one hundred thirty-three".