918718416004 has 27 divisors (see below), whose sum is σ = 1648068241071. Its totient is φ = 448116984960.

The previous prime is 918718416001. The next prime is 918718416019. The reversal of 918718416004 is 400614817819.

It is a happy number.

The square root of 918718416004 is 958498.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 15154102404 + 903564313600 = 123102^2 + 950560^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918718416001) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 78590992 + ... + 78602680.

Almost surely, 2^918718416004 is an apocalyptic number.

918718416004 is the 958498-th square number.

It is an amenable number.

918718416004 is a deficient number, since it is larger than the sum of its proper divisors (729349825067).

918718416004 is an frugal number, since it uses more digits than its factorization.

918718416004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23464 (or 11732 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 49.

Multiplying 918718416004 by its sum of digits (49), we get a square (45017202384196 = 6709486²).

The spelling of 918718416004 in words is "nine hundred eighteen billion, seven hundred eighteen million, four hundred sixteen thousand, four".