2081389256 has 16 divisors (see below), whose sum is σ = 3968751600. Its totient is φ = 1023055504.

The previous prime is 2081389249. The next prime is 2081389273. The reversal of 2081389256 is 6529831802.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2204390 + ... + 2205333.

It is an arithmetic number, because the mean of its divisors is an integer number (248046975).

Almost surely, 2^2081389256 is an apocalyptic number.

It is an amenable number.

2081389256 is a deficient number, since it is larger than the sum of its proper divisors (1887362344).

2081389256 is a wasteful number, since it uses less digits than its factorization.

2081389256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409788 (or 4409784 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 2081389256 is about 45622.2451880659. The cubic root of 2081389256 is about 1276.7849930738.

The spelling of 2081389256 in words is "two billion, eighty-one million, three hundred eighty-nine thousand, two hundred fifty-six".