9813613 has 2 divisors, whose sum is σ = 9813614. Its totient is φ = 9813612.

The previous prime is 9813611. The next prime is 9813623. The reversal of 9813613 is 3163189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9320809 + 492804 = 3053^2 + 702^2 .

9813613 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 9813613 - 2¹ = 9813611 is a prime.

It is a super-2 number, since 2×9813613² = 192614000227538, which contains 22 as substring.

Together with 9813611, 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 (9813611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4906806 + 4906807.

It is an arithmetic number, because the mean of its divisors is an integer number (4906807).

Almost surely, 2^9813613 is an apocalyptic number.

It is an amenable number.

9813613 is a deficient number, since it is larger than the sum of its proper divisors (1).

9813613 is an equidigital number, since it uses as much as digits as its factorization.

9813613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 9813613 is about 3132.6686706385. The cubic root of 9813613 is about 214.0965369323.

The spelling of 9813613 in words is "nine million, eight hundred thirteen thousand, six hundred thirteen".