6138744673 has 2 divisors, whose sum is σ = 6138744674. Its totient is φ = 6138744672.

The previous prime is 6138744653. The next prime is 6138744749. The reversal of 6138744673 is 3764478316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3692749824 + 2445994849 = 60768^2 + 49457^2 .

It is a cyclic number.

It is not a de Polignac number, because 6138744673 - 2²¹ = 6136647521 is a prime.

It is not a weakly prime, because it can be changed into another prime (6138744653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3069372336 + 3069372337.

It is an arithmetic number, because the mean of its divisors is an integer number (3069372337).

Almost surely, 2^6138744673 is an apocalyptic number.

It is an amenable number.

6138744673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6138744673 is an equidigital number, since it uses as much as digits as its factorization.

6138744673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 49.

The square root of 6138744673 is about 78350.1414995531. The cubic root of 6138744673 is about 1831.0204301236.

The spelling of 6138744673 in words is "six billion, one hundred thirty-eight million, seven hundred forty-four thousand, six hundred seventy-three".