3943078020 has 216 divisors, whose sum is σ = 14092041600. Its totient is φ = 889709184.

The previous prime is 3943077997. The next prime is 3943078021. The reversal of 3943078020 is 208703493.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3943078021) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 693951 + ... + 699609.

Almost surely, 2^3943078020 is an apocalyptic number.

3943078020 is a gapful number since it is divisible by the number (30) 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 3943078020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7046020800).

3943078020 is an abundant number, since it is smaller than the sum of its proper divisors (10148963580).

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

3943078020 is a wasteful number, since it uses less digits than its factorization.

3943078020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767 (or 5755 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 3943078020 is about 62793.9329871923. The cubic root of 3943078020 is about 1579.8352148819.

The spelling of 3943078020 in words is "three billion, nine hundred forty-three million, seventy-eight thousand, twenty".