2081959659 has 32 divisors (see below), whose sum is σ = 3428812800. Its totient is φ = 1239870240.

The previous prime is 2081959643. The next prime is 2081959661. The reversal of 2081959659 is 9569591802.

It is not a de Polignac number, because 2081959659 - 2⁴ = 2081959643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2081959639) 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 31 ways as a sum of consecutive naturals, for example, 84789 + ... + 106550.

It is an arithmetic number, because the mean of its divisors is an integer number (107150400).

Almost surely, 2^2081959659 is an apocalyptic number.

2081959659 is a deficient number, since it is larger than the sum of its proper divisors (1346853141).

2081959659 is a wasteful number, since it uses less digits than its factorization.

2081959659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191392 (or 191386 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The square root of 2081959659 is about 45628.4961290639. The cubic root of 2081959659 is about 1276.9016163772.

The spelling of 2081959659 in words is "two billion, eighty-one million, nine hundred fifty-nine thousand, six hundred fifty-nine".