8816140981 has 2 divisors, whose sum is σ = 8816140982. Its totient is φ = 8816140980.

The previous prime is 8816140979. The next prime is 8816141023. The reversal of 8816140981 is 1890416188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6032628900 + 2783512081 = 77670^2 + 52759^2 .

It is a cyclic number.

It is not a de Polignac number, because 8816140981 - 2¹ = 8816140979 is a prime.

It is a super-2 number, since 2×8816140981² (a number of 21 digits) contains 22 as substring.

Together with 8816140979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8816140951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4408070490 + 4408070491.

It is an arithmetic number, because the mean of its divisors is an integer number (4408070491).

Almost surely, 2^8816140981 is an apocalyptic number.

It is an amenable number.

8816140981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8816140981 is an equidigital number, since it uses as much as digits as its factorization.

8816140981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 46.

The square root of 8816140981 is about 93894.3075005083. The cubic root of 8816140981 is about 2065.8217337105.

The spelling of 8816140981 in words is "eight billion, eight hundred sixteen million, one hundred forty thousand, nine hundred eighty-one".