238546138 has 16 divisors (see below), whose sum is σ = 360328320. Its totient is φ = 118440000.

The previous prime is 238546129. The next prime is 238546171. The reversal of 238546138 is 831645832.

It is a self number, because there is not a number n which added to its sum of digits gives 238546138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317263 + ... + 318013.

It is an arithmetic number, because the mean of its divisors is an integer number (22520520).

Almost surely, 2^238546138 is an apocalyptic number.

238546138 is a deficient number, since it is larger than the sum of its proper divisors (121782182).

238546138 is a wasteful number, since it uses less digits than its factorization.

238546138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653.

The product of its digits is 138240, while the sum is 40.

The square root of 238546138 is about 15444.9389121485. The cubic root of 238546138 is about 620.1891011802.

It can be divided in two parts, 23854 and 6138, that added together give a palindrome (29992).

The spelling of 238546138 in words is "two hundred thirty-eight million, five hundred forty-six thousand, one hundred thirty-eight".