6858324509 has 2 divisors, whose sum is σ = 6858324510. Its totient is φ = 6858324508.

The previous prime is 6858324491. The next prime is 6858324527. The reversal of 6858324509 is 9054238586.

It is a balanced prime because it is at equal distance from previous prime (6858324491) and next prime (6858324527).

It can be written as a sum of positive squares in only one way, i.e., 4418260900 + 2440063609 = 66470^2 + 49397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6858324509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6858324559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3429162254 + 3429162255.

It is an arithmetic number, because the mean of its divisors is an integer number (3429162255).

Almost surely, 2^6858324509 is an apocalyptic number.

It is an amenable number.

6858324509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6858324509 is an equidigital number, since it uses as much as digits as its factorization.

6858324509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The square root of 6858324509 is about 82815.0017146652. The cubic root of 6858324509 is about 1899.9376257455.

The spelling of 6858324509 in words is "six billion, eight hundred fifty-eight million, three hundred twenty-four thousand, five hundred nine".