1980773 has 2 divisors, whose sum is σ = 1980774. Its totient is φ = 1980772.

The previous prime is 1980763. The next prime is 1980791. The reversal of 1980773 is 3770891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1592644 + 388129 = 1262^2 + 623^2 .

It is an emirp because it is prime and its reverse (3770891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1980773 - 2⁴ = 1980757 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1980703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990386 + 990387.

It is an arithmetic number, because the mean of its divisors is an integer number (990387).

2^1980773 is an apocalyptic number.

It is an amenable number.

1980773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980773 is an equidigital number, since it uses as much as digits as its factorization.

1980773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1980773 is about 1407.3993747334. The cubic root of 1980773 is about 125.5870625443.

The spelling of 1980773 in words is "one million, nine hundred eighty thousand, seven hundred seventy-three".