3945806560 has 48 divisors (see below), whose sum is σ = 9326814336. Its totient is φ = 1577502208.

The previous prime is 3945806531. The next prime is 3945806563. The reversal of 3945806560 is 656085493.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3945806560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945806563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371889 + ... + 382351.

It is an arithmetic number, because the mean of its divisors is an integer number (194308632).

Almost surely, 2^3945806560 is an apocalyptic number.

It is an amenable number.

3945806560 is an abundant number, since it is smaller than the sum of its proper divisors (5381007776).

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

3945806560 is a wasteful number, since it uses less digits than its factorization.

3945806560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12835 (or 12827 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 3945806560 is about 62815.6553734815. The cubic root of 3945806560 is about 1580.1995368356.

The spelling of 3945806560 in words is "three billion, nine hundred forty-five million, eight hundred six thousand, five hundred sixty".