3838109381 has 4 divisors (see below), whose sum is σ = 3839537292. Its totient is φ = 3836681472.

The previous prime is 3838109369. The next prime is 3838109423. The reversal of 3838109381 is 1839018383.

It is a happy number.

3838109381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1887120481 + 1950988900 = 43441^2 + 44170^2 .

It is a cyclic number.

It is not a de Polignac number, because 3838109381 - 2²² = 3833915077 is a prime.

It is a super-2 number, since 2×3838109381² = 29462167241040406322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3838109311) 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, 709916 + ... + 715301.

It is an arithmetic number, because the mean of its divisors is an integer number (959884323).

Almost surely, 2^3838109381 is an apocalyptic number.

It is an amenable number.

3838109381 is a deficient number, since it is larger than the sum of its proper divisors (1427911).

3838109381 is a wasteful number, since it uses less digits than its factorization.

3838109381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427910.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 3838109381 is about 61952.4767947174. The cubic root of 3838109381 is about 1565.6900169472.

The spelling of 3838109381 in words is "three billion, eight hundred thirty-eight million, one hundred nine thousand, three hundred eighty-one".