6219134861 has 2 divisors, whose sum is σ = 6219134862. Its totient is φ = 6219134860.

The previous prime is 6219134731. The next prime is 6219134863. The reversal of 6219134861 is 1684319126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5856993961 + 362140900 = 76531^2 + 19030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6219134861 is a prime.

Together with 6219134863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6219134863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3109567430 + 3109567431.

It is an arithmetic number, because the mean of its divisors is an integer number (3109567431).

Almost surely, 2^6219134861 is an apocalyptic number.

It is an amenable number.

6219134861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6219134861 is an equidigital number, since it uses as much as digits as its factorization.

6219134861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 6219134861 is about 78861.4916229715. The cubic root of 6219134861 is about 1838.9785269433.

The spelling of 6219134861 in words is "six billion, two hundred nineteen million, one hundred thirty-four thousand, eight hundred sixty-one".