982363981 has 2 divisors, whose sum is σ = 982363982. Its totient is φ = 982363980.

The previous prime is 982363979. The next prime is 982364021. The reversal of 982363981 is 189363289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793548900 + 188815081 = 28170^2 + 13741^2 .

It is a cyclic number.

It is not a de Polignac number, because 982363981 - 2¹ = 982363979 is a prime.

It is a super-2 number, since 2×982363981² = 1930077982332336722, which contains 22 as substring.

Together with 982363979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (982363931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491181990 + 491181991.

It is an arithmetic number, because the mean of its divisors is an integer number (491181991).

Almost surely, 2^982363981 is an apocalyptic number.

It is an amenable number.

982363981 is a deficient number, since it is larger than the sum of its proper divisors (1).

982363981 is an equidigital number, since it uses as much as digits as its factorization.

982363981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 49.

The square root of 982363981 is about 31342.6862441623. The cubic root of 982363981 is about 994.0864255708.

The spelling of 982363981 in words is "nine hundred eighty-two million, three hundred sixty-three thousand, nine hundred eighty-one".