2065745729 has 8 divisors (see below), whose sum is σ = 2136672000. Its totient is φ = 1995087600.

The previous prime is 2065745699. The next prime is 2065745753. The reversal of 2065745729 is 9275475602.

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 2065745729 - 2¹² = 2065741633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065745789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51302 + ... + 82239.

It is an arithmetic number, because the mean of its divisors is an integer number (267084000).

Almost surely, 2^2065745729 is an apocalyptic number.

It is an amenable number.

2065745729 is a deficient number, since it is larger than the sum of its proper divisors (70926271).

2065745729 is a wasteful number, since it uses less digits than its factorization.

2065745729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134071.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The square root of 2065745729 is about 45450.4755640686. The cubic root of 2065745729 is about 1273.5782134512.

The spelling of 2065745729 in words is "two billion, sixty-five million, seven hundred forty-five thousand, seven hundred twenty-nine".