2009067161 has 4 divisors (see below), whose sum is σ = 2009416500. Its totient is φ = 2008717824.

The previous prime is 2009067149. The next prime is 2009067167. The reversal of 2009067161 is 1617609002.

It is a happy number.

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 1409551936 + 599515225 = 37544^2 + 24485^2 .

It is a cyclic number.

It is not a de Polignac number, because 2009067161 - 2⁶ = 2009067097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2009067167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165896 + ... + 177593.

It is an arithmetic number, because the mean of its divisors is an integer number (502354125).

Almost surely, 2^2009067161 is an apocalyptic number.

It is an amenable number.

2009067161 is a deficient number, since it is larger than the sum of its proper divisors (349339).

2009067161 is an equidigital number, since it uses as much as digits as its factorization.

2009067161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349338.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2009067161 is about 44822.6188547702. The cubic root of 2009067161 is about 1261.8221643321.

The spelling of 2009067161 in words is "two billion, nine million, sixty-seven thousand, one hundred sixty-one".