1980073 has 2 divisors, whose sum is σ = 1980074. Its totient is φ = 1980072.

The previous prime is 1980067. The next prime is 1980079. The reversal of 1980073 is 3700891.

It is a balanced prime because it is at equal distance from previous prime (1980067) and next prime (1980079).

It can be written as a sum of positive squares in only one way, i.e., 1968409 + 11664 = 1403^2 + 108^2 .

It is an emirp because it is prime and its reverse (3700891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1980073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1980079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990036 + 990037.

It is an arithmetic number, because the mean of its divisors is an integer number (990037).

2^1980073 is an apocalyptic number.

It is an amenable number.

1980073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980073 is an equidigital number, since it uses as much as digits as its factorization.

1980073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1980073 is about 1407.1506671284. The cubic root of 1980073 is about 125.5722667547.

The spelling of 1980073 in words is "one million, nine hundred eighty thousand, seventy-three".