3845666394 has 24 divisors (see below), whose sum is σ = 8619598260. Its totient is φ = 1237685568.

The previous prime is 3845666393. The next prime is 3845666399. The reversal of 3845666394 is 4936665483.

3845666394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3530142225 + 315524169 = 59415^2 + 17763^2 .

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3845666394.

It is not an unprimeable number, because it can be changed into a prime (3845666393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3683067 + ... + 3684110.

Almost surely, 2^3845666394 is an apocalyptic number.

3845666394 is an abundant number, since it is smaller than the sum of its proper divisors (4773931866).

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

3845666394 is a wasteful number, since it uses less digits than its factorization.

3845666394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367214 (or 7367211 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 54.

The square root of 3845666394 is about 62013.4372051735. The cubic root of 3845666394 is about 1566.7169273046.

The spelling of 3845666394 in words is "three billion, eight hundred forty-five million, six hundred sixty-six thousand, three hundred ninety-four".