238605726789 has 12 divisors (see below), whose sum is σ = 344714632236. Its totient is φ = 159041908032.

The previous prime is 238605726767. The next prime is 238605726791. The reversal of 238605726789 is 987627506832.

238605726789 is a `hidden beast` number, since 238 + 60 + 5 + 7 + 267 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 127888488225 + 110717238564 = 357615^2 + 332742^2 .

It is not a de Polignac number, because 238605726789 - 2⁷ = 238605726661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238605726739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2328432 + ... + 2428745.

It is an arithmetic number, because the mean of its divisors is an integer number (28726219353).

Almost surely, 2^238605726789 is an apocalyptic number.

It is an amenable number.

238605726789 is a deficient number, since it is larger than the sum of its proper divisors (106108905447).

238605726789 is a wasteful number, since it uses less digits than its factorization.

238605726789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4762756 (or 4762753 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 238605726789 in words is "two hundred thirty-eight billion, six hundred five million, seven hundred twenty-six thousand, seven hundred eighty-nine".