238478573 has 2 divisors, whose sum is σ = 238478574. Its totient is φ = 238478572.

The previous prime is 238478507. The next prime is 238478599. The reversal of 238478573 is 375874832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211469764 + 27008809 = 14542^2 + 5197^2 .

It is a cyclic number.

It is not a de Polignac number, because 238478573 - 2¹⁰ = 238477549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238471573) 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 as a sum of consecutive naturals, namely, 119239286 + 119239287.

It is an arithmetic number, because the mean of its divisors is an integer number (119239287).

Almost surely, 2^238478573 is an apocalyptic number.

It is an amenable number.

238478573 is a deficient number, since it is larger than the sum of its proper divisors (1).

238478573 is an equidigital number, since it uses as much as digits as its factorization.

238478573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 47.

The square root of 238478573 is about 15442.7514711595. The cubic root of 238478573 is about 620.1305422312.

The spelling of 238478573 in words is "two hundred thirty-eight million, four hundred seventy-eight thousand, five hundred seventy-three".