238239541 has 2 divisors, whose sum is σ = 238239542. Its totient is φ = 238239540.

The previous prime is 238239539. The next prime is 238239563. The reversal of 238239541 is 145932832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194017041 + 44222500 = 13929^2 + 6650^2 .

It is a cyclic number.

It is not a de Polignac number, because 238239541 - 2¹ = 238239539 is a prime.

Together with 238239539, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 238239541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238239941) 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, 119119770 + 119119771.

It is an arithmetic number, because the mean of its divisors is an integer number (119119771).

Almost surely, 2^238239541 is an apocalyptic number.

It is an amenable number.

238239541 is a deficient number, since it is larger than the sum of its proper divisors (1).

238239541 is an equidigital number, since it uses as much as digits as its factorization.

238239541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 238239541 is about 15435.0102364721. The cubic root of 238239541 is about 619.9232830849.

The spelling of 238239541 in words is "two hundred thirty-eight million, two hundred thirty-nine thousand, five hundred forty-one".