9982303781 has 2 divisors, whose sum is σ = 9982303782. Its totient is φ = 9982303780.

The previous prime is 9982303753. The next prime is 9982303783. The reversal of 9982303781 is 1873032899.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5857453156 + 4124850625 = 76534^2 + 64225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9982303781 is a prime.

It is a super-2 number, since 2×9982303781² (a number of 21 digits) contains 22 as substring.

Together with 9982303783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9982303783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991151890 + 4991151891.

It is an arithmetic number, because the mean of its divisors is an integer number (4991151891).

Almost surely, 2^9982303781 is an apocalyptic number.

It is an amenable number.

9982303781 is a deficient number, since it is larger than the sum of its proper divisors (1).

9982303781 is an equidigital number, since it uses as much as digits as its factorization.

9982303781 is an evil number, because the sum of its binary digits is even.

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

The square root of 9982303781 is about 99911.4797258053. The cubic root of 9982303781 is about 2153.1630947191.

The spelling of 9982303781 in words is "nine billion, nine hundred eighty-two million, three hundred three thousand, seven hundred eighty-one".