2061365609 has 4 divisors (see below), whose sum is σ = 2061803520. Its totient is φ = 2060927700.

The previous prime is 2061365597. The next prime is 2061365627. The reversal of 2061365609 is 9065631602.

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 not a de Polignac number, because 2061365609 - 2⁸ = 2061365353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2061365629) 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, 211817 + ... + 221334.

It is an arithmetic number, because the mean of its divisors is an integer number (515450880).

Almost surely, 2^2061365609 is an apocalyptic number.

It is an amenable number.

2061365609 is a deficient number, since it is larger than the sum of its proper divisors (437911).

2061365609 is an equidigital number, since it uses as much as digits as its factorization.

2061365609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437910.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 2061365609 is about 45402.2643598312. The cubic root of 2061365609 is about 1272.6774293373.

The spelling of 2061365609 in words is "two billion, sixty-one million, three hundred sixty-five thousand, six hundred nine".