2818161000 has 96 divisors (see below), whose sum is σ = 9525414600. Its totient is φ = 751507200.

The previous prime is 2818160993. The next prime is 2818161011. The reversal of 2818161000 is 1618182.

It can be written as a sum of positive squares in 4 ways, for example, as 222666084 + 2595494916 = 14922^2 + 50946^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147565 + ... + 165564.

Almost surely, 2^2818161000 is an apocalyptic number.

2818161000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2818161000 is an abundant number, since it is smaller than the sum of its proper divisors (6707253600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2818161000 is a wasteful number, since it uses less digits than its factorization.

2818161000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313156 (or 313139 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 2818161000 is about 53086.3541788283. The cubic root of 2818161000 is about 1412.5004672774.

Adding to 2818161000 its reverse (1618182), we get a palindrome (2819779182).

The spelling of 2818161000 in words is "two billion, eight hundred eighteen million, one hundred sixty-one thousand".