6861468109 has 2 divisors, whose sum is σ = 6861468110. Its totient is φ = 6861468108.

The previous prime is 6861468079. The next prime is 6861468181. The reversal of 6861468109 is 9018641686.

6861468109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6487819209 + 373648900 = 80547^2 + 19330^2 .

It is a cyclic number.

It is not a de Polignac number, because 6861468109 - 2²⁹ = 6324597197 is a prime.

It is a super-2 number, since 2×6861468109² = 94159489221648071762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6861468199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3430734054 + 3430734055.

It is an arithmetic number, because the mean of its divisors is an integer number (3430734055).

Almost surely, 2^6861468109 is an apocalyptic number.

It is an amenable number.

6861468109 is a deficient number, since it is larger than the sum of its proper divisors (1).

6861468109 is an equidigital number, since it uses as much as digits as its factorization.

6861468109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 6861468109 is about 82833.9791933238. The cubic root of 6861468109 is about 1900.2278682384.

The spelling of 6861468109 in words is "six billion, eight hundred sixty-one million, four hundred sixty-eight thousand, one hundred nine".