2000815811 has 16 divisors (see below), whose sum is σ = 2079779520. Its totient is φ = 1923315840.

The previous prime is 2000815783. The next prime is 2000815829. The reversal of 2000815811 is 1185180002.

It is a cyclic number.

It is not a de Polignac number, because 2000815811 - 2¹⁰ = 2000814787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000815871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1117505 + ... + 1119293.

It is an arithmetic number, because the mean of its divisors is an integer number (129986220).

Almost surely, 2^2000815811 is an apocalyptic number.

2000815811 is a deficient number, since it is larger than the sum of its proper divisors (78963709).

2000815811 is a wasteful number, since it uses less digits than its factorization.

2000815811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 2000815811 is about 44730.4796643184. The cubic root of 2000815811 is about 1260.0923361827.

Adding to 2000815811 its reverse (1185180002), we get a palindrome (3185995813).

The spelling of 2000815811 in words is "two billion, eight hundred fifteen thousand, eight hundred eleven".