3958578820 has 24 divisors (see below), whose sum is σ = 9500589504. Its totient is φ = 1357226976.

The previous prime is 3958578817. The next prime is 3958578853. The reversal of 3958578820 is 288758593.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14137642 + ... + 14137921.

It is an arithmetic number, because the mean of its divisors is an integer number (395857896).

Almost surely, 2^3958578820 is an apocalyptic number.

It is an amenable number.

3958578820 is an abundant number, since it is smaller than the sum of its proper divisors (5542010684).

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

3958578820 is a wasteful number, since it uses less digits than its factorization.

3958578820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28275579 (or 28275577 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The square root of 3958578820 is about 62917.2378605418. The cubic root of 3958578820 is about 1581.9026936335.

The spelling of 3958578820 in words is "three billion, nine hundred fifty-eight million, five hundred seventy-eight thousand, eight hundred twenty".