1968287280 has 40 divisors (see below), whose sum is σ = 6101691312. Its totient is φ = 524876544.

The previous prime is 1968287227. The next prime is 1968287297. The reversal of 1968287280 is 827828691.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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, 4100359 + ... + 4100838.

Almost surely, 2^1968287280 is an apocalyptic number.

1968287280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1968287280 is an abundant number, since it is smaller than the sum of its proper divisors (4133404032).

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

1968287280 is a wasteful number, since it uses less digits than its factorization.

1968287280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201213 (or 8201207 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 51.

The square root of 1968287280 is about 44365.3838031409. The cubic root of 1968287280 is about 1253.2262854350.

The spelling of 1968287280 in words is "one billion, nine hundred sixty-eight million, two hundred eighty-seven thousand, two hundred eighty".