3161809 has 8 divisors (see below), whose sum is σ = 3803840. Its totient is φ = 2567376.

The previous prime is 3161801. The next prime is 3161819. The reversal of 3161809 is 9081613.

It is a happy number.

3161809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3161809 - 2³ = 3161801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3161801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11754 + ... + 12019.

It is an arithmetic number, because the mean of its divisors is an integer number (475480).

Almost surely, 2^3161809 is an apocalyptic number.

It is an amenable number.

3161809 is a deficient number, since it is larger than the sum of its proper divisors (642031).

3161809 is a wasteful number, since it uses less digits than its factorization.

3161809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23799.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 3161809 is about 1778.1476316662. The cubic root of 3161809 is about 146.7726753113.

The spelling of 3161809 in words is "three million, one hundred sixty-one thousand, eight hundred nine".