1968464856 has 32 divisors (see below), whose sum is σ = 4988579760. Its totient is φ = 647165952.

The previous prime is 1968464843. The next prime is 1968464863. The reversal of 1968464856 is 6584648691.

It is a junction number, because it is equal to n+sod(n) for n = 1968464796 and 1968464805.

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, 560025 + ... + 563528.

Almost surely, 2^1968464856 is an apocalyptic number.

It is an amenable number.

1968464856 is an abundant number, since it is smaller than the sum of its proper divisors (3020114904).

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

1968464856 is a wasteful number, since it uses less digits than its factorization.

1968464856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123635 (or 1123631 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 57.

The square root of 1968464856 is about 44367.3850480282. The cubic root of 1968464856 is about 1253.2639723826.

The spelling of 1968464856 in words is "one billion, nine hundred sixty-eight million, four hundred sixty-four thousand, eight hundred fifty-six".