238260158161 has 3 divisors (see below), whose sum is σ = 238260646281. Its totient is φ = 238259670042.

The previous prime is 238260158141. The next prime is 238260158189. The reversal of 238260158161 is 161851062832.

The square root of 238260158161 is 488119.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 238260158161 - 2³³ = 229670223569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238260158141) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 244060 + ... + 732178.

It is an arithmetic number, because the mean of its divisors is an integer number (79420215427).

Almost surely, 2^238260158161 is an apocalyptic number.

238260158161 is the 488119-th square number.

238260158161 is the 244060-th centered octagonal number.

It is an amenable number.

238260158161 is a deficient number, since it is larger than the sum of its proper divisors (488120).

238260158161 is an frugal number, since it uses more digits than its factorization.

238260158161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976238 (or 488119 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 238260158161 in words is "two hundred thirty-eight billion, two hundred sixty million, one hundred fifty-eight thousand, one hundred sixty-one".