2609041905 has 24 divisors (see below), whose sum is σ = 4760358720. Its totient is φ = 1318252320.

The previous prime is 2609041879. The next prime is 2609041909. The reversal of 2609041905 is 5091409062.

2609041905 is a `hidden beast` number, since 2 + 609 + 0 + 41 + 9 + 0 + 5 = 666.

2609041905 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2609041905 - 2¹¹ = 2609039857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2609041905.

It is not an unprimeable number, because it can be changed into a prime (2609041909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1524901 + ... + 1526610.

It is an arithmetic number, because the mean of its divisors is an integer number (198348280).

Almost surely, 2^2609041905 is an apocalyptic number.

It is an amenable number.

2609041905 is a deficient number, since it is larger than the sum of its proper divisors (2151316815).

2609041905 is a wasteful number, since it uses less digits than its factorization.

2609041905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051541 (or 3051538 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2609041905 is about 51078.7813578202. The cubic root of 2609041905 is about 1376.6610282281.

The spelling of 2609041905 in words is "two billion, six hundred nine million, forty-one thousand, nine hundred five".