918204445 has 8 divisors (see below), whose sum is σ = 1102127544. Its totient is φ = 734375424.

The previous prime is 918204403. The next prime is 918204449. The reversal of 918204445 is 544402819.

It can be written as a sum of positive squares in 4 ways, for example, as 179506404 + 738698041 = 13398^2 + 27179^2 .

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-918204445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918204449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117 + ... + 42853.

It is an arithmetic number, because the mean of its divisors is an integer number (137765943).

Almost surely, 2^918204445 is an apocalyptic number.

It is an amenable number.

918204445 is a deficient number, since it is larger than the sum of its proper divisors (183923099).

918204445 is a wasteful number, since it uses less digits than its factorization.

918204445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47039.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 918204445 is about 30301.8884725028. Note that the first 3 decimals coincide. The cubic root of 918204445 is about 971.9556834413.

The spelling of 918204445 in words is "nine hundred eighteen million, two hundred four thousand, four hundred forty-five".