1985925673872 has 900 divisors, whose sum is σ = 7175106531648. Its totient is φ = 519379257600.

The previous prime is 1985925673867. The next prime is 1985925673909. The reversal of 1985925673872 is 2783765295891.

1985925673872 is a `hidden beast` number, since 1 + 9 + 8 + 59 + 2 + 567 + 3 + 8 + 7 + 2 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1985925673872.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 3147266997 + ... + 3147267627.

Almost surely, 2^{1985925673872} is an apocalyptic number.

1985925673872 is a gapful number since it is divisible by the number (12) 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 1985925673872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3587553265824).

1985925673872 is an abundant number, since it is smaller than the sum of its proper divisors (5189180857776).

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

1985925673872 is a wasteful number, since it uses less digits than its factorization.

1985925673872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 693 counting only the distinct ones).

The product of its digits is 457228800, while the sum is 72.

The spelling of 1985925673872 in words is "one trillion, nine hundred eighty-five billion, nine hundred twenty-five million, six hundred seventy-three thousand, eight hundred seventy-two".