238643134 has 4 divisors (see below), whose sum is σ = 357964704. Its totient is φ = 119321566.

The previous prime is 238643113. The next prime is 238643137. The reversal of 238643134 is 431346832.

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

It is a self number, because there is not a number n which added to its sum of digits gives 238643134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238643137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59660782 + ... + 59660785.

It is an arithmetic number, because the mean of its divisors is an integer number (89491176).

Almost surely, 2^238643134 is an apocalyptic number.

238643134 is a deficient number, since it is larger than the sum of its proper divisors (119321570).

238643134 is a wasteful number, since it uses less digits than its factorization.

238643134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119321569.

The product of its digits is 41472, while the sum is 34.

The square root of 238643134 is about 15448.0786507578. The cubic root of 238643134 is about 620.2731488072.

Adding to 238643134 its reverse (431346832), we get a palindrome (669989966).

The spelling of 238643134 in words is "two hundred thirty-eight million, six hundred forty-three thousand, one hundred thirty-four".