1974171046848 has 448 divisors, whose sum is σ = 7318074580992. Its totient is φ = 452747243520.

The previous prime is 1974171046819. The next prime is 1974171046849. The reversal of 1974171046848 is 8486401714791.

It is a tau number, because it is divible by the number of its divisors (448).

It is a junction number, because it is equal to n+sod(n) for n = 1974171046791 and 1974171046800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974171046849) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4197115 + ... + 4643717.

It is an arithmetic number, because the mean of its divisors is an integer number (16334987904).

Almost surely, 2^{1974171046848} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1974171046848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3659037290496).

1974171046848 is an abundant number, since it is smaller than the sum of its proper divisors (5343903534144).

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

1974171046848 is a wasteful number, since it uses less digits than its factorization.

1974171046848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446672 (or 446662 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 1974171046848 in words is "one trillion, nine hundred seventy-four billion, one hundred seventy-one million, forty-six thousand, eight hundred forty-eight".