1980941 has 2 divisors, whose sum is σ = 1980942. Its totient is φ = 1980940.

The previous prime is 1980929. The next prime is 1980947. The reversal of 1980941 is 1490891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1932100 + 48841 = 1390^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980941 - 2⁶ = 1980877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1980898 and 1980907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1980947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990470 + 990471.

It is an arithmetic number, because the mean of its divisors is an integer number (990471).

2^1980941 is an apocalyptic number.

It is an amenable number.

1980941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980941 is an equidigital number, since it uses as much as digits as its factorization.

1980941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1980941 is about 1407.4590580191. The cubic root of 1980941 is about 125.5906130150.

The spelling of 1980941 in words is "one million, nine hundred eighty thousand, nine hundred forty-one".