3946645842 has 8 divisors (see below), whose sum is σ = 7893291696. Its totient is φ = 1315548612.

The previous prime is 3946645841. The next prime is 3946645889. The reversal of 3946645842 is 2485466493.

3946645842 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 sphenic number, since it is the product of 3 distinct primes.

3946645842 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3946645841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328887148 + ... + 328887159.

It is an arithmetic number, because the mean of its divisors is an integer number (986661462).

Almost surely, 2^3946645842 is an apocalyptic number.

3946645842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3946645842 is a wasteful number, since it uses less digits than its factorization.

3946645842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657774312.

The product of its digits is 4976640, while the sum is 51.

The square root of 3946645842 is about 62822.3355344260. The cubic root of 3946645842 is about 1580.3115662342.

The spelling of 3946645842 in words is "three billion, nine hundred forty-six million, six hundred forty-five thousand, eight hundred forty-two".