8038138356 has 120 divisors (see below), whose sum is σ = 22426500096. Its totient is φ = 2501694720.

The previous prime is 8038138351. The next prime is 8038138439. The reversal of 8038138356 is 6538318308.

It is a super-2 number, since 2×8038138356² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8038138351) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 693771 + ... + 705261.

Almost surely, 2^8038138356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8038138356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11213250048).

8038138356 is an abundant number, since it is smaller than the sum of its proper divisors (14388361740).

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

8038138356 is a wasteful number, since it uses less digits than its factorization.

8038138356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11651 (or 11640 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 8038138356 is about 89655.6654986175. The cubic root of 8038138356 is about 2003.1731592011.

The spelling of 8038138356 in words is "eight billion, thirty-eight million, one hundred thirty-eight thousand, three hundred fifty-six".