918236196480 has 128 divisors (see below), whose sum is σ = 3027804883200. Its totient is φ = 236419420160.

The previous prime is 918236196439. The next prime is 918236196491. The reversal of 918236196480 is 84691632819.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 918236196480.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8189976 + ... + 8301335.

It is an arithmetic number, because the mean of its divisors is an integer number (23654725650).

Almost surely, 2^918236196480 is an apocalyptic number.

It is an amenable number.

918236196480 is an abundant number, since it is smaller than the sum of its proper divisors (2109568686720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918236196480 is a wasteful number, since it uses less digits than its factorization.

918236196480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16491362 (or 16491350 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 57.

The spelling of 918236196480 in words is "nine hundred eighteen billion, two hundred thirty-six million, one hundred ninety-six thousand, four hundred eighty".