1916471874864 has 80 divisors (see below), whose sum is σ = 4975813670400. Its totient is φ = 635611162368.

The previous prime is 1916471874851. The next prime is 1916471874869. The reversal of 1916471874864 is 4684781746191.

It is a junction number, because it is equal to n+sod(n) for n = 1916471874795 and 1916471874804.

It is not an unprimeable number, because it can be changed into a prime (1916471874869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16683577 + ... + 16798055.

It is an arithmetic number, because the mean of its divisors is an integer number (62197670880).

Almost surely, 2^{1916471874864} is an apocalyptic number.

It is an amenable number.

1916471874864 is an abundant number, since it is smaller than the sum of its proper divisors (3059341795536).

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

1916471874864 is a wasteful number, since it uses less digits than its factorization.

1916471874864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116242 (or 116236 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 66.

The spelling of 1916471874864 in words is "one trillion, nine hundred sixteen billion, four hundred seventy-one million, eight hundred seventy-four thousand, eight hundred sixty-four".