6642093797 has 2 divisors, whose sum is σ = 6642093798. Its totient is φ = 6642093796.

The previous prime is 6642093791. The next prime is 6642093859. The reversal of 6642093797 is 7973902466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6541412641 + 100681156 = 80879^2 + 10034^2 .

It is a cyclic number.

It is not a de Polignac number, because 6642093797 - 2⁴ = 6642093781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6642093791) 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, 3321046898 + 3321046899.

It is an arithmetic number, because the mean of its divisors is an integer number (3321046899).

Almost surely, 2^6642093797 is an apocalyptic number.

It is an amenable number.

6642093797 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642093797 is an equidigital number, since it uses as much as digits as its factorization.

6642093797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 53.

The square root of 6642093797 is about 81499.0416937524. The cubic root of 6642093797 is about 1879.7568152512.

The spelling of 6642093797 in words is "six billion, six hundred forty-two million, ninety-three thousand, seven hundred ninety-seven".