2541696009 has 4 divisors (see below), whose sum is σ = 3388928016. Its totient is φ = 1694464004.

The previous prime is 2541695977. The next prime is 2541696043. The reversal of 2541696009 is 9006961452.

It is a happy number.

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 2541696009 - 2⁵ = 2541695977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2541696049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423615999 + ... + 423616004.

It is an arithmetic number, because the mean of its divisors is an integer number (847232004).

Almost surely, 2^2541696009 is an apocalyptic number.

It is an amenable number.

2541696009 is a deficient number, since it is larger than the sum of its proper divisors (847232007).

2541696009 is an equidigital number, since it uses as much as digits as its factorization.

2541696009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847232006.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 2541696009 is about 50415.2358816261. The cubic root of 2541696009 is about 1364.7126032890.

The spelling of 2541696009 in words is "two billion, five hundred forty-one million, six hundred ninety-six thousand, nine".