918808816 has 10 divisors (see below), whose sum is σ = 1780192112. Its totient is φ = 459404400.

The previous prime is 918808801. The next prime is 918808867. The reversal of 918808816 is 618808819.

918808816 is a strobogrammatic number because it is the same when read upside-down.

It is a self number, because there is not a number n which added to its sum of digits gives 918808816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28712760 + ... + 28712791.

Almost surely, 2^918808816 is an apocalyptic number.

It is an amenable number.

918808816 is a deficient number, since it is larger than the sum of its proper divisors (861383296).

918808816 is a wasteful number, since it uses less digits than its factorization.

918808816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57425559 (or 57425553 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 49.

The square root of 918808816 is about 30311.8593293120. The cubic root of 918808816 is about 972.1688868647.

The spelling of 918808816 in words is "nine hundred eighteen million, eight hundred eight thousand, eight hundred sixteen".