238851605 has 4 divisors (see below), whose sum is σ = 286621932. Its totient is φ = 191081280.

The previous prime is 238851593. The next prime is 238851611. The reversal of 238851605 is 506158832.

238851605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 135443044 + 103408561 = 11638^2 + 10169^2 .

It is not a de Polignac number, because 238851605 - 2²⁶ = 171742741 is a prime.

It is a super-2 number, since 2×238851605² = 114100178422152050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23885156 + ... + 23885165.

It is an arithmetic number, because the mean of its divisors is an integer number (71655483).

Almost surely, 2^238851605 is an apocalyptic number.

It is an amenable number.

238851605 is a deficient number, since it is larger than the sum of its proper divisors (47770327).

238851605 is an equidigital number, since it uses as much as digits as its factorization.

238851605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47770326.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 238851605 is about 15454.8246512214. The cubic root of 238851605 is about 620.4537131591.

The spelling of 238851605 in words is "two hundred thirty-eight million, eight hundred fifty-one thousand, six hundred five".