918189485 has 16 divisors (see below), whose sum is σ = 1114474032. Its totient is φ = 726144000.

The previous prime is 918189479. The next prime is 918189491. The reversal of 918189485 is 584981819.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (918189479) and next prime (918189491).

It can be written as a sum of positive squares in 8 ways, for example, as 11095561 + 907093924 = 3331^2 + 30118^2 .

It is not a de Polignac number, because 918189485 - 2¹⁰ = 918188461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492455 + ... + 494315.

It is an arithmetic number, because the mean of its divisors is an integer number (69654627).

Almost surely, 2^918189485 is an apocalyptic number.

It is an amenable number.

918189485 is a deficient number, since it is larger than the sum of its proper divisors (196284547).

918189485 is a wasteful number, since it uses less digits than its factorization.

918189485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944.

The product of its digits is 829440, while the sum is 53.

The square root of 918189485 is about 30301.6416221960. The cubic root of 918189485 is about 971.9504048289.

The spelling of 918189485 in words is "nine hundred eighteen million, one hundred eighty-nine thousand, four hundred eighty-five".