2011643411 has 16 divisors (see below), whose sum is σ = 2211686400. Its totient is φ = 1821175488.

The previous prime is 2011643399. The next prime is 2011643429. The reversal of 2011643411 is 1143461102.

It is a cyclic number.

It is not a de Polignac number, because 2011643411 - 2¹⁰ = 2011642387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011643441) 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, 767375 + ... + 769991.

It is an arithmetic number, because the mean of its divisors is an integer number (138230400).

Almost surely, 2^2011643411 is an apocalyptic number.

2011643411 is a deficient number, since it is larger than the sum of its proper divisors (200042989).

2011643411 is a wasteful number, since it uses less digits than its factorization.

2011643411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2011643411 is about 44851.3479284625. The cubic root of 2011643411 is about 1262.3612836645.

The spelling of 2011643411 in words is "two billion, eleven million, six hundred forty-three thousand, four hundred eleven".