2061539729 has 16 divisors (see below), whose sum is σ = 2195304000. Its totient is φ = 1930438656.

The previous prime is 2061539723. The next prime is 2061539743. The reversal of 2061539729 is 9279351602.

It is a cyclic number.

It is not a de Polignac number, because 2061539729 - 2¹² = 2061535633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2061539729.

It is not an unprimeable number, because it can be changed into a prime (2061539723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595997 + ... + 599445.

It is an arithmetic number, because the mean of its divisors is an integer number (137206500).

Almost surely, 2^2061539729 is an apocalyptic number.

It is an amenable number.

2061539729 is a deficient number, since it is larger than the sum of its proper divisors (133764271).

2061539729 is a wasteful number, since it uses less digits than its factorization.

2061539729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 2061539729 is about 45404.1818448477. The cubic root of 2061539729 is about 1272.7132619514.

The spelling of 2061539729 in words is "two billion, sixty-one million, five hundred thirty-nine thousand, seven hundred twenty-nine".