38775192889 has 4 divisors (see below), whose sum is σ = 39506800356. Its totient is φ = 38043585424.

The previous prime is 38775192823. The next prime is 38775192931. The reversal of 38775192889 is 98829157783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22355333289 + 16419859600 = 149517^2 + 128140^2 .

It is a cyclic number.

It is not a de Polignac number, because 38775192889 - 2¹¹ = 38775190841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38775192809) 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, 365803654 + ... + 365803759.

It is an arithmetic number, because the mean of its divisors is an integer number (9876700089).

Almost surely, 2^38775192889 is an apocalyptic number.

It is an amenable number.

38775192889 is a deficient number, since it is larger than the sum of its proper divisors (731607467).

38775192889 is an equidigital number, since it uses as much as digits as its factorization.

38775192889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731607466.

The product of its digits is 60963840, while the sum is 67.

The spelling of 38775192889 in words is "thirty-eight billion, seven hundred seventy-five million, one hundred ninety-two thousand, eight hundred eighty-nine".