2081061689 has 16 divisors (see below), whose sum is σ = 2485263360. Its totient is φ = 1703805840.

The previous prime is 2081061673. The next prime is 2081061709. The reversal of 2081061689 is 9861601802.

It is a cyclic number.

It is not a de Polignac number, because 2081061689 - 2⁴ = 2081061673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081061889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110234 + ... + 127724.

It is an arithmetic number, because the mean of its divisors is an integer number (155328960).

Almost surely, 2^2081061689 is an apocalyptic number.

It is an amenable number.

2081061689 is a deficient number, since it is larger than the sum of its proper divisors (404201671).

2081061689 is a wasteful number, since it uses less digits than its factorization.

2081061689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18260.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 2081061689 is about 45618.6550547032. The cubic root of 2081061689 is about 1276.7180098363.

The spelling of 2081061689 in words is "two billion, eighty-one million, sixty-one thousand, six hundred eighty-nine".