1980983 has 2 divisors, whose sum is σ = 1980984. Its totient is φ = 1980982.

The previous prime is 1980949. The next prime is 1980991. The reversal of 1980983 is 3890891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1980983 - 2⁶ = 1980919 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1980283) 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 as a sum of consecutive naturals, namely, 990491 + 990492.

It is an arithmetic number, because the mean of its divisors is an integer number (990492).

2^1980983 is an apocalyptic number.

1980983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980983 is an equidigital number, since it uses as much as digits as its factorization.

1980983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1980983 is about 1407.4739784451. The cubic root of 1980983 is about 125.5915006014.

The spelling of 1980983 in words is "one million, nine hundred eighty thousand, nine hundred eighty-three".