1978743375000 has 672 divisors, whose sum is σ = 7765775596800. Its totient is φ = 445788000000.

The previous prime is 1978743374999. The next prime is 1978743375053. The reversal of 1978743375000 is 5733478791.

1978743375000 is a `hidden beast` number, since 1 + 97 + 8 + 7 + 43 + 3 + 7 + 500 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 559123231 + ... + 559126769.

Almost surely, 2^{1978743375000} is an apocalyptic number.

1978743375000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1978743375000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3882887798400).

1978743375000 is an abundant number, since it is smaller than the sum of its proper divisors (5787032221800).

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

1978743375000 is an equidigital number, since it uses as much as digits as its factorization.

1978743375000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 54.

The spelling of 1978743375000 in words is "one trillion, nine hundred seventy-eight billion, seven hundred forty-three million, three hundred seventy-five thousand".