968981778 has 40 divisors (see below), whose sum is σ = 2173134348. Its totient is φ = 322711776.

The previous prime is 968981777. The next prime is 968981807. The reversal of 968981778 is 877189869.

968981778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 956850489 + 12131289 = 30933^2 + 3483^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (968981771) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 272500 + ... + 276032.

Almost surely, 2^968981778 is an apocalyptic number.

968981778 is an abundant number, since it is smaller than the sum of its proper divisors (1204152570).

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

968981778 is a wasteful number, since it uses less digits than its factorization.

968981778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5240 (or 5231 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 63.

The square root of 968981778 is about 31128.4721436822. The cubic root of 968981778 is about 989.5518081449.

The spelling of 968981778 in words is "nine hundred sixty-eight million, nine hundred eighty-one thousand, seven hundred seventy-eight".