3786643844 has 12 divisors (see below), whose sum is σ = 6630613584. Its totient is φ = 1892182824.

The previous prime is 3786643813. The next prime is 3786643849. The reversal of 3786643844 is 4483466873.

It is not an unprimeable number, because it can be changed into a prime (3786643849) 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, 277274 + ... + 290609.

It is an arithmetic number, because the mean of its divisors is an integer number (552551132).

Almost surely, 2^3786643844 is an apocalyptic number.

It is an amenable number.

3786643844 is a deficient number, since it is larger than the sum of its proper divisors (2843969740).

3786643844 is a wasteful number, since it uses less digits than its factorization.

3786643844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569554 (or 569552 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 53.

The square root of 3786643844 is about 61535.7119403034. The cubic root of 3786643844 is about 1558.6603450750.

The spelling of 3786643844 in words is "three billion, seven hundred eighty-six million, six hundred forty-three thousand, eight hundred forty-four".