1968021064854 has 48 divisors (see below), whose sum is σ = 4594223542272. Its totient is φ = 605258210304.

The previous prime is 1968021064729. The next prime is 1968021064897. The reversal of 1968021064854 is 4584601208691.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1968021064854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1495702 + ... + 2484585.

It is an arithmetic number, because the mean of its divisors is an integer number (95712990464).

Almost surely, 2^{1968021064854} is an apocalyptic number.

1968021064854 is an abundant number, since it is smaller than the sum of its proper divisors (2626202477418).

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

1968021064854 is a wasteful number, since it uses less digits than its factorization.

1968021064854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982421 (or 3982418 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 1968021064854 in words is "one trillion, nine hundred sixty-eight billion, twenty-one million, sixty-four thousand, eight hundred fifty-four".