19980763241 has 2 divisors, whose sum is σ = 19980763242. Its totient is φ = 19980763240.

The previous prime is 19980763237. The next prime is 19980763247. The reversal of 19980763241 is 14236708991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12321888016 + 7658875225 = 111004^2 + 87515^2 .

It is a cyclic number.

It is not a de Polignac number, because 19980763241 - 2² = 19980763237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19980763241.

It is not a weakly prime, because it can be changed into another prime (19980763247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9990381620 + 9990381621.

It is an arithmetic number, because the mean of its divisors is an integer number (9990381621).

Almost surely, 2^19980763241 is an apocalyptic number.

It is an amenable number.

19980763241 is a deficient number, since it is larger than the sum of its proper divisors (1).

19980763241 is an equidigital number, since it uses as much as digits as its factorization.

19980763241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 19980763241 in words is "nineteen billion, nine hundred eighty million, seven hundred sixty-three thousand, two hundred forty-one".