1978843462848 has 784 divisors, whose sum is σ = 6940105804800. Its totient is φ = 547890739200.

The previous prime is 1978843462837. The next prime is 1978843462853. The reversal of 1978843462848 is 8482643488791.

1978843462848 is a `hidden beast` number, since 1 + 9 + 7 + 8 + 84 + 3 + 462 + 84 + 8 = 666.

It is a super-2 number, since 2×1978843462848² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1414469253 + ... + 1414470651.

Almost surely, 2^{1978843462848} is an apocalyptic number.

1978843462848 is a gapful number since it is divisible by the number (18) 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 1978843462848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3470052902400).

1978843462848 is an abundant number, since it is smaller than the sum of its proper divisors (4961262341952).

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

1978843462848 is an equidigital number, since it uses as much as digits as its factorization.

1978843462848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568 (or 1543 counting only the distinct ones).

The product of its digits is 594542592, while the sum is 72.

The spelling of 1978843462848 in words is "one trillion, nine hundred seventy-eight billion, eight hundred forty-three million, four hundred sixty-two thousand, eight hundred forty-eight".