4123668809 has 4 divisors (see below), whose sum is σ = 4440874116. Its totient is φ = 3806463504.

The previous prime is 4123668803. The next prime is 4123668811. The reversal of 4123668809 is 9088663214.

4123668809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1210692025 + 2912976784 = 34795^2 + 53972^2 .

It is a cyclic number.

It is not a de Polignac number, because 4123668809 - 2⁴ = 4123668793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4123668803) 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, 158602634 + ... + 158602659.

It is an arithmetic number, because the mean of its divisors is an integer number (1110218529).

Almost surely, 2^4123668809 is an apocalyptic number.

It is an amenable number.

4123668809 is a deficient number, since it is larger than the sum of its proper divisors (317205307).

4123668809 is a wasteful number, since it uses less digits than its factorization.

4123668809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317205306.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 4123668809 is about 64215.7987492175. The cubic root of 4123668809 is about 1603.5946276151.

The spelling of 4123668809 in words is "four billion, one hundred twenty-three million, six hundred sixty-eight thousand, eight hundred nine".