6594190861 has 2 divisors, whose sum is σ = 6594190862. Its totient is φ = 6594190860.

The previous prime is 6594190859. The next prime is 6594190921. The reversal of 6594190861 is 1680914956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3858273225 + 2735917636 = 62115^2 + 52306^2 .

It is a cyclic number.

It is not a de Polignac number, because 6594190861 - 2¹ = 6594190859 is a prime.

It is a super-2 number, since 2×6594190861² = 86966706222591842642, which contains 22 as substring.

Together with 6594190859, 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 (6594190831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3297095430 + 3297095431.

It is an arithmetic number, because the mean of its divisors is an integer number (3297095431).

Almost surely, 2^6594190861 is an apocalyptic number.

It is an amenable number.

6594190861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6594190861 is an equidigital number, since it uses as much as digits as its factorization.

6594190861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 6594190861 is about 81204.6233967008. The cubic root of 6594190861 is about 1875.2269578662.

The spelling of 6594190861 in words is "six billion, five hundred ninety-four million, one hundred ninety thousand, eight hundred sixty-one".