238641593 has 4 divisors (see below), whose sum is σ = 238828020. Its totient is φ = 238455168.

The previous prime is 238641553. The next prime is 238641619. The reversal of 238641593 is 395146832.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 163507369 + 75134224 = 12787^2 + 8668^2 .

It is a cyclic number.

It is not a de Polignac number, because 238641593 - 2¹⁰ = 238640569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238641593.

It is not an unprimeable number, because it can be changed into a prime (238641523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91280 + ... + 93857.

It is an arithmetic number, because the mean of its divisors is an integer number (59707005).

Almost surely, 2^238641593 is an apocalyptic number.

It is an amenable number.

238641593 is a deficient number, since it is larger than the sum of its proper divisors (186427).

238641593 is a wasteful number, since it uses less digits than its factorization.

238641593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186426.

The product of its digits is 155520, while the sum is 41.

The square root of 238641593 is about 15448.0287739245. The cubic root of 238641593 is about 620.2718136994.

The spelling of 238641593 in words is "two hundred thirty-eight million, six hundred forty-one thousand, five hundred ninety-three".