9826381 has 2 divisors, whose sum is σ = 9826382. Its totient is φ = 9826380.

The previous prime is 9826379. The next prime is 9826393. The reversal of 9826381 is 1836289.

9826381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7650756 + 2175625 = 2766^2 + 1475^2 .

It is a cyclic number.

It is not a de Polignac number, because 9826381 - 2¹ = 9826379 is a prime.

It is a super-2 number, since 2×9826381² = 193115527114322, which contains 22 as substring.

Together with 9826379, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9826381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9826351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4913190 + 4913191.

It is an arithmetic number, because the mean of its divisors is an integer number (4913191).

Almost surely, 2^9826381 is an apocalyptic number.

It is an amenable number.

9826381 is a deficient number, since it is larger than the sum of its proper divisors (1).

9826381 is an equidigital number, since it uses as much as digits as its factorization.

9826381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 9826381 is about 3134.7058873202. The cubic root of 9826381 is about 214.1893467850.

The spelling of 9826381 in words is "nine million, eight hundred twenty-six thousand, three hundred eighty-one".