2809641361 has 8 divisors (see below), whose sum is σ = 2896559424. Its totient is φ = 2723301360.

The previous prime is 2809641343. The next prime is 2809641377. The reversal of 2809641361 is 1631469082.

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

It is a cyclic number.

It is not a de Polignac number, because 2809641361 - 2¹⁷ = 2809510289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2809641161) 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 7 ways as a sum of consecutive naturals, for example, 134635 + ... + 154096.

It is an arithmetic number, because the mean of its divisors is an integer number (362069928).

Almost surely, 2^2809641361 is an apocalyptic number.

It is an amenable number.

2809641361 is a deficient number, since it is larger than the sum of its proper divisors (86918063).

2809641361 is a wasteful number, since it uses less digits than its factorization.

2809641361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289031.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 2809641361 is about 53006.0502301388. The cubic root of 2809641361 is about 1411.0756443505.

The spelling of 2809641361 in words is "two billion, eight hundred nine million, six hundred forty-one thousand, three hundred sixty-one".