238891916 has 12 divisors (see below), whose sum is σ = 423788232. Its totient is φ = 117809568.

The previous prime is 238891867. The next prime is 238891949. The reversal of 238891916 is 619198832.

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, 408770 + ... + 409353.

It is an arithmetic number, because the mean of its divisors is an integer number (35315686).

Almost surely, 2^238891916 is an apocalyptic number.

It is an amenable number.

238891916 is a deficient number, since it is larger than the sum of its proper divisors (184896316).

238891916 is a wasteful number, since it uses less digits than its factorization.

238891916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818200 (or 818198 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 238891916 is about 15456.1287520517. The cubic root of 238891916 is about 620.4886158661.

The spelling of 238891916 in words is "two hundred thirty-eight million, eight hundred ninety-one thousand, nine hundred sixteen".