227138818 has 4 divisors (see below), whose sum is σ = 340708230. Its totient is φ = 113569408.

The previous prime is 227138803. The next prime is 227138837. The reversal of 227138818 is 818831722.

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., 224190729 + 2948089 = 14973^2 + 1717^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 56784703 + ... + 56784706.

Almost surely, 2^227138818 is an apocalyptic number.

227138818 is a deficient number, since it is larger than the sum of its proper divisors (113569412).

227138818 is a wasteful number, since it uses less digits than its factorization.

227138818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113569411.

The product of its digits is 43008, while the sum is 40.

The square root of 227138818 is about 15071.1253063598. The cubic root of 227138818 is about 610.1413432210.

The spelling of 227138818 in words is "two hundred twenty-seven million, one hundred thirty-eight thousand, eight hundred eighteen".