8193491 has 2 divisors, whose sum is σ = 8193492. Its totient is φ = 8193490.

The previous prime is 8193469. The next prime is 8193509. The reversal of 8193491 is 1943918.

8193491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8193491 - 2¹⁸ = 7931347 is a prime.

It is not a weakly prime, because it can be changed into another prime (8193461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4096745 + 4096746.

It is an arithmetic number, because the mean of its divisors is an integer number (4096746).

Almost surely, 2^8193491 is an apocalyptic number.

8193491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8193491 is an equidigital number, since it uses as much as digits as its factorization.

8193491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 8193491 is about 2862.4274663299. The cubic root of 8193491 is about 201.5995973343.

The spelling of 8193491 in words is "eight million, one hundred ninety-three thousand, four hundred ninety-one".