238833157 has 2 divisors, whose sum is σ = 238833158. Its totient is φ = 238833156.

The previous prime is 238833139. The next prime is 238833197. The reversal of 238833157 is 751338832.

It is an a-pointer prime, because the next prime (238833197) can be obtained adding 238833157 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236113956 + 2719201 = 15366^2 + 1649^2 .

It is a cyclic number.

It is not a de Polignac number, because 238833157 - 2⁷ = 238833029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238833107) 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 as a sum of consecutive naturals, namely, 119416578 + 119416579.

It is an arithmetic number, because the mean of its divisors is an integer number (119416579).

Almost surely, 2^238833157 is an apocalyptic number.

It is an amenable number.

238833157 is a deficient number, since it is larger than the sum of its proper divisors (1).

238833157 is an equidigital number, since it uses as much as digits as its factorization.

238833157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 238833157 is about 15454.2278034200. The cubic root of 238833157 is about 620.4377389105.

The spelling of 238833157 in words is "two hundred thirty-eight million, eight hundred thirty-three thousand, one hundred fifty-seven".