27838140893 has 4 divisors (see below), whose sum is σ = 27838718688. Its totient is φ = 27837563100.

The previous prime is 27838140881. The next prime is 27838140929. The reversal of 27838140893 is 39804183872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27838140893 - 2¹⁰ = 27838139869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27838140493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209321 + ... + 315422.

It is an arithmetic number, because the mean of its divisors is an integer number (6959679672).

Almost surely, 2^27838140893 is an apocalyptic number.

It is an amenable number.

27838140893 is a deficient number, since it is larger than the sum of its proper divisors (577795).

27838140893 is an equidigital number, since it uses as much as digits as its factorization.

27838140893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577794.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 27838140893 in words is "twenty-seven billion, eight hundred thirty-eight million, one hundred forty thousand, eight hundred ninety-three".