6138193729 has 2 divisors, whose sum is σ = 6138193730. Its totient is φ = 6138193728.

The previous prime is 6138193687. The next prime is 6138193739. The reversal of 6138193729 is 9273918316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6011676225 + 126517504 = 77535^2 + 11248^2 .

It is a cyclic number.

It is not a de Polignac number, because 6138193729 - 2¹⁵ = 6138160961 is a prime.

It is not a weakly prime, because it can be changed into another prime (6138193739) 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, 3069096864 + 3069096865.

It is an arithmetic number, because the mean of its divisors is an integer number (3069096865).

Almost surely, 2^6138193729 is an apocalyptic number.

It is an amenable number.

6138193729 is a deficient number, since it is larger than the sum of its proper divisors (1).

6138193729 is an equidigital number, since it uses as much as digits as its factorization.

6138193729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 6138193729 is about 78346.6255112497. The cubic root of 6138193729 is about 1830.9656512856.

The spelling of 6138193729 in words is "six billion, one hundred thirty-eight million, one hundred ninety-three thousand, seven hundred twenty-nine".