1968947000840 has 16 divisors (see below), whose sum is σ = 4430130751980. Its totient is φ = 787578800320.

The previous prime is 1968947000827. The next prime is 1968947000857. The reversal of 1968947000840 is 480007498691.

It can be written as a sum of positive squares in 2 ways, for example, as 1840727146756 + 128219854084 = 1356734^2 + 358078^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24611837471 + ... + 24611837550.

Almost surely, 2^{1968947000840} is an apocalyptic number.

1968947000840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1968947000840 is an abundant number, since it is smaller than the sum of its proper divisors (2461183751140).

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

1968947000840 is a wasteful number, since it uses less digits than its factorization.

1968947000840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49223675032 (or 49223675028 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 1968947000840 in words is "one trillion, nine hundred sixty-eight billion, nine hundred forty-seven million, eight hundred forty", and thus it is an aban number.