3838237891228 has 144 divisors (see below), whose sum is σ = 7975070460000. Its totient is φ = 1608115052544.

The previous prime is 3838237891193. The next prime is 3838237891273. The reversal of 3838237891228 is 8221987328383.

It is a super-3 number, since 3×3838237891228³ (a number of 39 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3838237891228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 349592643 + ... + 349603621.

It is an arithmetic number, because the mean of its divisors is an integer number (55382433750).

Almost surely, 2^{3838237891228} is an apocalyptic number.

It is an amenable number.

3838237891228 is an abundant number, since it is smaller than the sum of its proper divisors (4136832568772).

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

3838237891228 is a wasteful number, since it uses less digits than its factorization.

3838237891228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12104 (or 12089 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 64.

The spelling of 3838237891228 in words is "three trillion, eight hundred thirty-eight billion, two hundred thirty-seven million, eight hundred ninety-one thousand, two hundred twenty-eight".