2106640441 has 4 divisors (see below), whose sum is σ = 2106810000. Its totient is φ = 2106470884.

The previous prime is 2106640423. The next prime is 2106640453. The reversal of 2106640441 is 1440466012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2106640441 - 2¹¹ = 2106638393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106640141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64531 + ... + 91528.

It is an arithmetic number, because the mean of its divisors is an integer number (526702500).

Almost surely, 2^2106640441 is an apocalyptic number.

It is an amenable number.

2106640441 is a deficient number, since it is larger than the sum of its proper divisors (169559).

2106640441 is a wasteful number, since it uses less digits than its factorization.

2106640441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169558.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2106640441 is about 45898.1529149050. The cubic root of 2106640441 is about 1281.9275241896.

The spelling of 2106640441 in words is "two billion, one hundred six million, six hundred forty thousand, four hundred forty-one".