229845138 has 8 divisors (see below), whose sum is σ = 459690288. Its totient is φ = 76615044.

The previous prime is 229845137. The next prime is 229845149. The reversal of 229845138 is 831548922.

It is a sphenic number, since it is the product of 3 distinct primes.

229845138 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 229845138.

It is not an unprimeable number, because it can be changed into a prime (229845131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19153756 + ... + 19153767.

It is an arithmetic number, because the mean of its divisors is an integer number (57461286).

Almost surely, 2^229845138 is an apocalyptic number.

229845138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229845138 is a wasteful number, since it uses less digits than its factorization.

229845138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38307528.

The product of its digits is 138240, while the sum is 42.

The square root of 229845138 is about 15160.6443794451. The cubic root of 229845138 is about 612.5550253495. Note that the first 3 decimals are identical.

The spelling of 229845138 in words is "two hundred twenty-nine million, eight hundred forty-five thousand, one hundred thirty-eight".