3943686144 has 112 divisors (see below), whose sum is σ = 10802557008. Its totient is φ = 1278738432.

The previous prime is 3943686139. The next prime is 3943686161. The reversal of 3943686144 is 4416863493.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 3943686093 and 3943686102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907144 + ... + 911480.

Almost surely, 2^3943686144 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 3943686144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5401278504).

3943686144 is an abundant number, since it is smaller than the sum of its proper divisors (6858870864).

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

3943686144 is an equidigital number, since it uses as much as digits as its factorization.

3943686144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403 (or 4379 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 48.

The square root of 3943686144 is about 62798.7750198999. The cubic root of 3943686144 is about 1579.9164277753.

The spelling of 3943686144 in words is "three billion, nine hundred forty-three million, six hundred eighty-six thousand, one hundred forty-four".