3840638804 has 12 divisors (see below), whose sum is σ = 6728267028. Its totient is φ = 1918276800.

The previous prime is 3840638803. The next prime is 3840638833. The reversal of 3840638804 is 4088360483.

It can be written as a sum of positive squares in 2 ways, for example, as 1432773904 + 2407864900 = 37852^2 + 49070^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840638801) 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, 506417 + ... + 513944.

It is an arithmetic number, because the mean of its divisors is an integer number (560688919).

Almost surely, 2^3840638804 is an apocalyptic number.

It is an amenable number.

3840638804 is a deficient number, since it is larger than the sum of its proper divisors (2887628224).

3840638804 is a wasteful number, since it uses less digits than its factorization.

3840638804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021306 (or 1021304 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The square root of 3840638804 is about 61972.8876525856. The cubic root of 3840638804 is about 1566.0338861358.

The spelling of 3840638804 in words is "three billion, eight hundred forty million, six hundred thirty-eight thousand, eight hundred four".