1980671417 has 2 divisors, whose sum is σ = 1980671418. Its totient is φ = 1980671416.

The previous prime is 1980671401. The next prime is 1980671423. The reversal of 1980671417 is 7141760891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1204714681 + 775956736 = 34709^2 + 27856^2 .

It is a cyclic number.

It is not a de Polignac number, because 1980671417 - 2⁴ = 1980671401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1980671317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990335708 + 990335709.

It is an arithmetic number, because the mean of its divisors is an integer number (990335709).

Almost surely, 2^1980671417 is an apocalyptic number.

It is an amenable number.

1980671417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980671417 is an equidigital number, since it uses as much as digits as its factorization.

1980671417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 1980671417 is about 44504.7347705837. The cubic root of 1980671417 is about 1255.8491561665.

The spelling of 1980671417 in words is "one billion, nine hundred eighty million, six hundred seventy-one thousand, four hundred seventeen".