3838635438 has 64 divisors (see below), whose sum is σ = 8504939520. Its totient is φ = 1145289600.

The previous prime is 3838635433. The next prime is 3838635461. The reversal of 3838635438 is 8345368383.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3838635433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2402856 + ... + 2404452.

It is an arithmetic number, because the mean of its divisors is an integer number (132889680).

Almost surely, 2^3838635438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3838635438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4252469760).

3838635438 is an abundant number, since it is smaller than the sum of its proper divisors (4666304082).

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

3838635438 is a wasteful number, since it uses less digits than its factorization.

3838635438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153.

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

The square root of 3838635438 is about 61956.7222987143. The cubic root of 3838635438 is about 1565.7615456161.

The spelling of 3838635438 in words is "three billion, eight hundred thirty-eight million, six hundred thirty-five thousand, four hundred thirty-eight".