6198727813 has 2 divisors, whose sum is σ = 6198727814. Its totient is φ = 6198727812.

The previous prime is 6198727739. The next prime is 6198727859. The reversal of 6198727813 is 3187278916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5793188769 + 405539044 = 76113^2 + 20138^2 .

It is a cyclic number.

It is not a de Polignac number, because 6198727813 - 2¹⁷ = 6198596741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6198737813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3099363906 + 3099363907.

It is an arithmetic number, because the mean of its divisors is an integer number (3099363907).

Almost surely, 2^6198727813 is an apocalyptic number.

It is an amenable number.

6198727813 is a deficient number, since it is larger than the sum of its proper divisors (1).

6198727813 is an equidigital number, since it uses as much as digits as its factorization.

6198727813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 52.

The square root of 6198727813 is about 78731.9999301428. Note that the first 4 decimals coincide. The cubic root of 6198727813 is about 1836.9648896601.

The spelling of 6198727813 in words is "six billion, one hundred ninety-eight million, seven hundred twenty-seven thousand, eight hundred thirteen".