3838235187721 has 8 divisors (see below), whose sum is σ = 4188372724800. Its totient is φ = 3488298828240.

The previous prime is 3838235187649. The next prime is 3838235187727. The reversal of 3838235187721 is 1277815328383.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3838235187721 - 2²⁷ = 3838100969993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3838235187727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50254501 + ... + 50330818.

It is an arithmetic number, because the mean of its divisors is an integer number (523546590600).

Almost surely, 2^{3838235187721} is an apocalyptic number.

It is an amenable number.

3838235187721 is a deficient number, since it is larger than the sum of its proper divisors (350137537079).

3838235187721 is a wasteful number, since it uses less digits than its factorization.

3838235187721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100588799.

The product of its digits is 13547520, while the sum is 58.

The spelling of 3838235187721 in words is "three trillion, eight hundred thirty-eight billion, two hundred thirty-five million, one hundred eighty-seven thousand, seven hundred twenty-one".