8782648181 has 2 divisors, whose sum is σ = 8782648182. Its totient is φ = 8782648180.

The previous prime is 8782648163. The next prime is 8782648201. The reversal of 8782648181 is 1818462878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6588568900 + 2194079281 = 81170^2 + 46841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8782648181 is a prime.

It is a super-2 number, since 2×8782648181² (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 (8782648081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4391324090 + 4391324091.

It is an arithmetic number, because the mean of its divisors is an integer number (4391324091).

Almost surely, 2^8782648181 is an apocalyptic number.

It is an amenable number.

8782648181 is a deficient number, since it is larger than the sum of its proper divisors (1).

8782648181 is an equidigital number, since it uses as much as digits as its factorization.

8782648181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1376256, while the sum is 53.

The square root of 8782648181 is about 93715.7840547685. The cubic root of 8782648181 is about 2063.2023730688.

The spelling of 8782648181 in words is "eight billion, seven hundred eighty-two million, six hundred forty-eight thousand, one hundred eighty-one".