2065281678 has 32 divisors (see below), whose sum is σ = 4591987200. Its totient is φ = 688056408.

The previous prime is 2065281671. The next prime is 2065281689. The reversal of 2065281678 is 8761825602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065281671) 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, 102133 + ... + 120671.

It is an arithmetic number, because the mean of its divisors is an integer number (143499600).

Almost surely, 2^2065281678 is an apocalyptic number.

2065281678 is an abundant number, since it is smaller than the sum of its proper divisors (2526705522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2065281678 is a wasteful number, since it uses less digits than its factorization.

2065281678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20613 (or 20607 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2065281678 is about 45445.3702592464. The cubic root of 2065281678 is about 1273.4828403864.

The spelling of 2065281678 in words is "two billion, sixty-five million, two hundred eighty-one thousand, six hundred seventy-eight".