6745639093 has 2 divisors, whose sum is σ = 6745639094. Its totient is φ = 6745639092.

The previous prime is 6745639081. The next prime is 6745639193. The reversal of 6745639093 is 3909365476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4754516209 + 1991122884 = 68953^2 + 44622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6745639093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6745639093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6745639013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3372819546 + 3372819547.

It is an arithmetic number, because the mean of its divisors is an integer number (3372819547).

Almost surely, 2^6745639093 is an apocalyptic number.

It is an amenable number.

6745639093 is a deficient number, since it is larger than the sum of its proper divisors (1).

6745639093 is an equidigital number, since it uses as much as digits as its factorization.

6745639093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3674160, while the sum is 52.

The square root of 6745639093 is about 82131.8397030043. The cubic root of 6745639093 is about 1889.4744946802.

The spelling of 6745639093 in words is "six billion, seven hundred forty-five million, six hundred thirty-nine thousand, ninety-three".