238158971 has 4 divisors (see below), whose sum is σ = 238192032. Its totient is φ = 238125912.

The previous prime is 238158929. The next prime is 238158979. The reversal of 238158971 is 179851832.

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 a cyclic number.

It is not a de Polignac number, because 238158971 - 2¹⁴ = 238142587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238158979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620 + ... + 21833.

It is an arithmetic number, because the mean of its divisors is an integer number (59548008).

Almost surely, 2^238158971 is an apocalyptic number.

238158971 is a deficient number, since it is larger than the sum of its proper divisors (33061).

238158971 is a wasteful number, since it uses less digits than its factorization.

238158971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33060.

The product of its digits is 120960, while the sum is 44.

The square root of 238158971 is about 15432.4000401752. The cubic root of 238158971 is about 619.8533914535.

The spelling of 238158971 in words is "two hundred thirty-eight million, one hundred fifty-eight thousand, nine hundred seventy-one".