4155789809 has 4 divisors (see below), whose sum is σ = 4181285616. Its totient is φ = 4130294004.

The previous prime is 4155789767. The next prime is 4155789817. The reversal of 4155789809 is 9089875514.

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 a de Polignac number, because none of the positive numbers 2^k-4155789809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4155789829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12747659 + ... + 12747984.

It is an arithmetic number, because the mean of its divisors is an integer number (1045321404).

Almost surely, 2^4155789809 is an apocalyptic number.

It is an amenable number.

4155789809 is a deficient number, since it is larger than the sum of its proper divisors (25495807).

4155789809 is a wasteful number, since it uses less digits than its factorization.

4155789809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25495806.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The square root of 4155789809 is about 64465.4156040276. The cubic root of 4155789809 is about 1607.7475554430.

The spelling of 4155789809 in words is "four billion, one hundred fifty-five million, seven hundred eighty-nine thousand, eight hundred nine".