6171343649 has 2 divisors, whose sum is σ = 6171343650. Its totient is φ = 6171343648.

The previous prime is 6171343589. The next prime is 6171343679. The reversal of 6171343649 is 9463431716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3906250000 + 2265093649 = 62500^2 + 47593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6171343649 is a prime.

It is not a weakly prime, because it can be changed into another prime (6171343679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3085671824 + 3085671825.

It is an arithmetic number, because the mean of its divisors is an integer number (3085671825).

Almost surely, 2^6171343649 is an apocalyptic number.

It is an amenable number.

6171343649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6171343649 is an equidigital number, since it uses as much as digits as its factorization.

6171343649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 44.

The square root of 6171343649 is about 78557.8999782963. The cubic root of 6171343649 is about 1834.2558388462.

The spelling of 6171343649 in words is "six billion, one hundred seventy-one million, three hundred forty-three thousand, six hundred forty-nine".