8352787981 has 2 divisors, whose sum is σ = 8352787982. Its totient is φ = 8352787980.

The previous prime is 8352787967. The next prime is 8352788029. The reversal of 8352787981 is 1897872538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8120713225 + 232074756 = 90115^2 + 15234^2 .

It is a cyclic number.

It is not a de Polignac number, because 8352787981 - 2¹³ = 8352779789 is a prime.

It is a super-2 number, since 2×8352787981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8352787921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4176393990 + 4176393991.

It is an arithmetic number, because the mean of its divisors is an integer number (4176393991).

Almost surely, 2^8352787981 is an apocalyptic number.

It is an amenable number.

8352787981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8352787981 is an equidigital number, since it uses as much as digits as its factorization.

8352787981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 58.

The square root of 8352787981 is about 91393.5882926149. The cubic root of 8352787981 is about 2028.9771336661.

The spelling of 8352787981 in words is "eight billion, three hundred fifty-two million, seven hundred eighty-seven thousand, nine hundred eighty-one".