1968655660 has 12 divisors (see below), whose sum is σ = 4134176928. Its totient is φ = 787462256.

The previous prime is 1968655621. The next prime is 1968655679. The reversal of 1968655660 is 665568691.

It is a junction number, because it is equal to n+sod(n) for n = 1968655598 and 1968655607.

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, 49216372 + ... + 49216411.

It is an arithmetic number, because the mean of its divisors is an integer number (344514744).

Almost surely, 2^1968655660 is an apocalyptic number.

1968655660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1968655660 is an abundant number, since it is smaller than the sum of its proper divisors (2165521268).

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

1968655660 is a wasteful number, since it uses less digits than its factorization.

1968655660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98432792 (or 98432790 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The square root of 1968655660 is about 44369.5352691461. The cubic root of 1968655660 is about 1253.3044641821.

The spelling of 1968655660 in words is "one billion, nine hundred sixty-eight million, six hundred fifty-five thousand, six hundred sixty".