1980563717 has 8 divisors (see below), whose sum is σ = 2177109792. Its totient is φ = 1786766800.

The previous prime is 1980563707. The next prime is 1980563719. The reversal of 1980563717 is 7173650891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1980563717 - 2¹⁸ = 1980301573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980563719) 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 in 7 ways as a sum of consecutive naturals, for example, 685778 + ... + 688659.

It is an arithmetic number, because the mean of its divisors is an integer number (272138724).

Almost surely, 2^1980563717 is an apocalyptic number.

It is an amenable number.

1980563717 is a deficient number, since it is larger than the sum of its proper divisors (196546075).

1980563717 is a wasteful number, since it uses less digits than its factorization.

1980563717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374579.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 1980563717 is about 44503.5247705168. The cubic root of 1980563717 is about 1255.8263932784.

The spelling of 1980563717 in words is "one billion, nine hundred eighty million, five hundred sixty-three thousand, seven hundred seventeen".