238540207 has 4 divisors (see below), whose sum is σ = 238902840. Its totient is φ = 238177576.

The previous prime is 238540189. The next prime is 238540219. The reversal of 238540207 is 702045832.

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

It is a cyclic number.

It is not a de Polignac number, because 238540207 - 2¹¹ = 238538159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238540007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180328 + ... + 181645.

It is an arithmetic number, because the mean of its divisors is an integer number (59725710).

Almost surely, 2^238540207 is an apocalyptic number.

238540207 is a deficient number, since it is larger than the sum of its proper divisors (362633).

238540207 is an equidigital number, since it uses as much as digits as its factorization.

238540207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362632.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 238540207 is about 15444.7469063109. The cubic root of 238540207 is about 620.1839611934.

The spelling of 238540207 in words is "two hundred thirty-eight million, five hundred forty thousand, two hundred seven".