1968166886 has 16 divisors (see below), whose sum is σ = 3398277120. Its totient is φ = 837430920.

The previous prime is 1968166859. The next prime is 1968166903. The reversal of 1968166886 is 6886618691.

It is a super-2 number, since 2×1968166886² = 7747361782293873992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503750 + ... + 507641.

It is an arithmetic number, because the mean of its divisors is an integer number (212392320).

Almost surely, 2^1968166886 is an apocalyptic number.

1968166886 is a deficient number, since it is larger than the sum of its proper divisors (1430110234).

1968166886 is a wasteful number, since it uses less digits than its factorization.

1968166886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011539.

The product of its digits is 5971968, while the sum is 59.

The square root of 1968166886 is about 44364.0269362464. The cubic root of 1968166886 is about 1253.2007329316.

The spelling of 1968166886 in words is "one billion, nine hundred sixty-eight million, one hundred sixty-six thousand, eight hundred eighty-six".