8348771993 has 2 divisors, whose sum is σ = 8348771994. Its totient is φ = 8348771992.

The previous prime is 8348771987. The next prime is 8348771999. The reversal of 8348771993 is 3991778438.

It is a balanced prime because it is at equal distance from previous prime (8348771987) and next prime (8348771999).

It can be written as a sum of positive squares in only one way, i.e., 8090462809 + 258309184 = 89947^2 + 16072^2 .

It is a cyclic number.

It is not a de Polignac number, because 8348771993 - 2⁶ = 8348771929 is a prime.

It is a super-2 number, since 2×8348771993² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8348771999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4174385996 + 4174385997.

It is an arithmetic number, because the mean of its divisors is an integer number (4174385997).

Almost surely, 2^8348771993 is an apocalyptic number.

It is an amenable number.

8348771993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8348771993 is an equidigital number, since it uses as much as digits as its factorization.

8348771993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 59.

The square root of 8348771993 is about 91371.6148100711. The cubic root of 8348771993 is about 2028.6519067644.

The spelling of 8348771993 in words is "eight billion, three hundred forty-eight million, seven hundred seventy-one thousand, nine hundred ninety-three".