2838128381 has 16 divisors (see below), whose sum is σ = 3138267456. Its totient is φ = 2545200000.

The previous prime is 2838128353. The next prime is 2838128437. The reversal of 2838128381 is 1838218382.

It is a de Polignac number, because none of the positive numbers 2^k-2838128381 is a prime.

It is a super-2 number, since 2×2838128381² = 16109945414075362322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2838128341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307646 + ... + 316736.

It is an arithmetic number, because the mean of its divisors is an integer number (196141716).

Almost surely, 2^2838128381 is an apocalyptic number.

It is an amenable number.

2838128381 is a deficient number, since it is larger than the sum of its proper divisors (300139075).

2838128381 is a wasteful number, since it uses less digits than its factorization.

2838128381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9484.

The product of its digits is 147456, while the sum is 44.

The square root of 2838128381 is about 53274.0873314597. The cubic root of 2838128381 is about 1415.8285933490.

Subtracting from 2838128381 its reverse (1838218382), we obtain a palindrome (999909999).

The spelling of 2838128381 in words is "two billion, eight hundred thirty-eight million, one hundred twenty-eight thousand, three hundred eighty-one".