1968915066 has 16 divisors (see below), whose sum is σ = 3967891488. Its totient is φ = 651294800.

The previous prime is 1968914971. The next prime is 1968915083. The reversal of 1968915066 is 6605198691.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 1251705 + ... + 1253276.

It is an arithmetic number, because the mean of its divisors is an integer number (247993218).

Almost surely, 2^1968915066 is an apocalyptic number.

1968915066 is an abundant number, since it is smaller than the sum of its proper divisors (1998976422).

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

1968915066 is a wasteful number, since it uses less digits than its factorization.

1968915066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2505117.

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 1968915066 is about 44372.4584173561. The cubic root of 1968915066 is about 1253.3595102770.

The spelling of 1968915066 in words is "one billion, nine hundred sixty-eight million, nine hundred fifteen thousand, sixty-six".