918644227 has 8 divisors (see below), whose sum is σ = 922021056. Its totient is φ = 915274152.

The previous prime is 918644197. The next prime is 918644231. The reversal of 918644227 is 722446819.

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

It is a cyclic number.

It is not a de Polignac number, because 918644227 - 2¹⁵ = 918611459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918644527) 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, 524968 + ... + 526714.

It is an arithmetic number, because the mean of its divisors is an integer number (115252632).

Almost surely, 2^918644227 is an apocalyptic number.

918644227 is a deficient number, since it is larger than the sum of its proper divisors (3376829).

918644227 is a wasteful number, since it uses less digits than its factorization.

918644227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3377.

The product of its digits is 193536, while the sum is 43.

The square root of 918644227 is about 30309.1442802333. The cubic root of 918644227 is about 972.1108342146.

The spelling of 918644227 in words is "nine hundred eighteen million, six hundred forty-four thousand, two hundred twenty-seven".