238856138 has 4 divisors (see below), whose sum is σ = 358284210. Its totient is φ = 119428068.

The previous prime is 238856047. The next prime is 238856143. The reversal of 238856138 is 831658832.

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

It can be written as a sum of positive squares in only one way, i.e., 194407249 + 44448889 = 13943^2 + 6667^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59714033 + ... + 59714036.

Almost surely, 2^238856138 is an apocalyptic number.

238856138 is a deficient number, since it is larger than the sum of its proper divisors (119428072).

238856138 is a wasteful number, since it uses less digits than its factorization.

238856138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119428071.

The product of its digits is 276480, while the sum is 44.

The square root of 238856138 is about 15454.9713037585. The cubic root of 238856138 is about 620.4576381888.

The spelling of 238856138 in words is "two hundred thirty-eight million, eight hundred fifty-six thousand, one hundred thirty-eight".