1865852147712 has 384 divisors, whose sum is σ = 5812131386880. Its totient is φ = 521251061760.

The previous prime is 1865852147711. The next prime is 1865852147771. The reversal of 1865852147712 is 2177412585681.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1865852147711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 754488108 + ... + 754490580.

It is an arithmetic number, because the mean of its divisors is an integer number (15135758820).

Almost surely, 2^{1865852147712} is an apocalyptic number.

1865852147712 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 1865852147712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2906065693440).

1865852147712 is an abundant number, since it is smaller than the sum of its proper divisors (3946279239168).

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

1865852147712 is a wasteful number, since it uses less digits than its factorization.

1865852147712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889 (or 2869 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 57.

The spelling of 1865852147712 in words is "one trillion, eight hundred sixty-five billion, eight hundred fifty-two million, one hundred forty-seven thousand, seven hundred twelve".