229481138 has 4 divisors (see below), whose sum is σ = 344221710. Its totient is φ = 114740568.

The previous prime is 229481137. The next prime is 229481167. The reversal of 229481138 is 831184922.

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., 209294089 + 20187049 = 14467^2 + 4493^2 .

It is not an unprimeable number, because it can be changed into a prime (229481137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57370283 + ... + 57370286.

Almost surely, 2^229481138 is an apocalyptic number.

229481138 is a deficient number, since it is larger than the sum of its proper divisors (114740572).

229481138 is a wasteful number, since it uses less digits than its factorization.

229481138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114740571.

The product of its digits is 27648, while the sum is 38.

The square root of 229481138 is about 15148.6348559862. The cubic root of 229481138 is about 612.2314918044.

The spelling of 229481138 in words is "two hundred twenty-nine million, four hundred eighty-one thousand, one hundred thirty-eight".