8818418281 has 8 divisors (see below), whose sum is σ = 9124996680. Its totient is φ = 8512006272.

The previous prime is 8818418267. The next prime is 8818418299. The reversal of 8818418281 is 1828148188.

It can be written as a sum of positive squares in 4 ways, for example, as 475240000 + 8343178281 = 21800^2 + 91341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8818418281 - 2¹⁹ = 8817893993 is a prime.

It is a super-2 number, since 2×8818418281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8818418221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71491 + ... + 150823.

It is an arithmetic number, because the mean of its divisors is an integer number (1140624585).

Almost surely, 2^8818418281 is an apocalyptic number.

It is an amenable number.

8818418281 is a deficient number, since it is larger than the sum of its proper divisors (306578399).

8818418281 is a wasteful number, since it uses less digits than its factorization.

8818418281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83195.

The product of its digits is 262144, while the sum is 49.

The square root of 8818418281 is about 93906.4336507356. The cubic root of 8818418281 is about 2065.9995927393. Note that the first 3 decimals are identical.

The spelling of 8818418281 in words is "eight billion, eight hundred eighteen million, four hundred eighteen thousand, two hundred eighty-one".