6858324491 has 2 divisors, whose sum is σ = 6858324492. Its totient is φ = 6858324490.

The previous prime is 6858324469. The next prime is 6858324509. The reversal of 6858324491 is 1944238586.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6858324491 is a prime.

It is a super-2 number, since 2×6858324491² = 94073229647700818162, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6858324791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3429162245 + 3429162246.

It is an arithmetic number, because the mean of its divisors is an integer number (3429162246).

Almost surely, 2^6858324491 is an apocalyptic number.

6858324491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6858324491 is an equidigital number, since it uses as much as digits as its factorization.

6858324491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 50.

The square root of 6858324491 is about 82815.0016059892. The cubic root of 6858324491 is about 1899.9376240834.

The spelling of 6858324491 in words is "six billion, eight hundred fifty-eight million, three hundred twenty-four thousand, four hundred ninety-one".