918916816 has 20 divisors (see below), whose sum is σ = 1788845824. Its totient is φ = 457279200.

The previous prime is 918916781. The next prime is 918916879. The reversal of 918916816 is 618619819.

It is a happy number.

918916816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×918916816² = 1688816229455155712, which contains 22 as substring.

918916816 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 918916816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132720 + ... + 139471.

Almost surely, 2^918916816 is an apocalyptic number.

It is an amenable number.

918916816 is a deficient number, since it is larger than the sum of its proper divisors (869929008).

918916816 is a wasteful number, since it uses less digits than its factorization.

918916816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272410 (or 272404 counting only the distinct ones).

The product of its digits is 186624, while the sum is 49.

The square root of 918916816 is about 30313.6407579162. The cubic root of 918916816 is about 972.2069760821.

The spelling of 918916816 in words is "nine hundred eighteen million, nine hundred sixteen thousand, eight hundred sixteen".