3851731338 has 384 divisors, whose sum is σ = 11031552000. Its totient is φ = 883975680.

The previous prime is 3851731337. The next prime is 3851731421. The reversal of 3851731338 is 8331371583.

It is a super-3 number, since 3×3851731338³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 3851731338.

It is not an unprimeable number, because it can be changed into a prime (3851731337) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 65283553 + ... + 65283611.

It is an arithmetic number, because the mean of its divisors is an integer number (28728000).

Almost surely, 2^3851731338 is an apocalyptic number.

3851731338 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3851731338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5515776000).

3851731338 is an abundant number, since it is smaller than the sum of its proper divisors (7179820662).

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

3851731338 is a wasteful number, since it uses less digits than its factorization.

3851731338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 163 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 3851731338 is about 62062.3181810026. The cubic root of 3851731338 is about 1567.5401101331.

The spelling of 3851731338 in words is "three billion, eight hundred fifty-one million, seven hundred thirty-one thousand, three hundred thirty-eight".