227838913 has 8 divisors (see below), whose sum is σ = 244547208. Its totient is φ = 211497984.

The previous prime is 227838907. The next prime is 227838953. The reversal of 227838913 is 319838722.

It can be written as a sum of positive squares in 4 ways, for example, as 62536464 + 165302449 = 7908^2 + 12857^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227838913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 227838913.

It is not an unprimeable number, because it can be changed into a prime (227838953) 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 7 ways as a sum of consecutive naturals, for example, 90556 + ... + 93037.

It is an arithmetic number, because the mean of its divisors is an integer number (30568401).

Almost surely, 2^227838913 is an apocalyptic number.

It is an amenable number.

227838913 is a deficient number, since it is larger than the sum of its proper divisors (16708295).

227838913 is a wasteful number, since it uses less digits than its factorization.

227838913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183683.

The product of its digits is 145152, while the sum is 43.

The square root of 227838913 is about 15094.3338044446. Note that the first 3 decimals coincide. The cubic root of 227838913 is about 610.7675664143.

The spelling of 227838913 in words is "two hundred twenty-seven million, eight hundred thirty-eight thousand, nine hundred thirteen".