8118281 has 8 divisors (see below), whose sum is σ = 8376264. Its totient is φ = 7862400.

The previous prime is 8118251. The next prime is 8118329. The reversal of 8118281 is 1828118.

It can be written as a sum of positive squares in 4 ways, for example, as 1666681 + 6451600 = 1291^2 + 2540^2 .

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 8118281 - 2⁶ = 8118217 is a prime.

It is a super-2 number, since 2×8118281² = 131812972789922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8118251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11231 + ... + 11931.

It is an arithmetic number, because the mean of its divisors is an integer number (1047033).

Almost surely, 2^8118281 is an apocalyptic number.

It is an amenable number.

8118281 is a deficient number, since it is larger than the sum of its proper divisors (257983).

8118281 is a wasteful number, since it uses less digits than its factorization.

8118281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its digits is 1024, while the sum is 29.

The square root of 8118281 is about 2849.2597284207. The cubic root of 8118281 is about 200.9808567365.

The spelling of 8118281 in words is "eight million, one hundred eighteen thousand, two hundred eighty-one".