8181359 has 2 divisors, whose sum is σ = 8181360. Its totient is φ = 8181358.

The previous prime is 8181347. The next prime is 8181361. The reversal of 8181359 is 9531818.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8181359 is a prime.

It is a Sophie Germain prime.

Together with 8181361, 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 (8181379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4090679 + 4090680.

It is an arithmetic number, because the mean of its divisors is an integer number (4090680).

Almost surely, 2^8181359 is an apocalyptic number.

8181359 is a deficient number, since it is larger than the sum of its proper divisors (1).

8181359 is an equidigital number, since it uses as much as digits as its factorization.

8181359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 35.

The square root of 8181359 is about 2860.3075009516. The cubic root of 8181359 is about 201.5000461797.

The spelling of 8181359 in words is "eight million, one hundred eighty-one thousand, three hundred fifty-nine".