3973678620 has 144 divisors (see below), whose sum is σ = 11797954560. Its totient is φ = 999165312.

The previous prime is 3973678619. The next prime is 3973678627. The reversal of 3973678620 is 268763793.

3973678620 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3973678627) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8295541 + ... + 8296019.

It is an arithmetic number, because the mean of its divisors is an integer number (81930240).

Almost surely, 2^3973678620 is an apocalyptic number.

3973678620 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 3973678620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5898977280).

3973678620 is an abundant number, since it is smaller than the sum of its proper divisors (7824275940).

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

3973678620 is a wasteful number, since it uses less digits than its factorization.

3973678620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 51.

The square root of 3973678620 is about 63037.1209685214. The cubic root of 3973678620 is about 1583.9115044045.

The spelling of 3973678620 in words is "three billion, nine hundred seventy-three million, six hundred seventy-eight thousand, six hundred twenty".