918190910920 has 32 divisors (see below), whose sum is σ = 2065961486520. Its totient is φ = 367270686720.

The previous prime is 918190910909. The next prime is 918190910927. The reversal of 918190910920 is 29019091819.

918190910920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 878460056644 + 39730854276 = 937262^2 + 199326^2 .

It is not an unprimeable number, because it can be changed into a prime (918190910927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3268840 + ... + 3538600.

Almost surely, 2^918190910920 is an apocalyptic number.

It is an amenable number.

918190910920 is an abundant number, since it is smaller than the sum of its proper divisors (1147770575600).

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

918190910920 is a wasteful number, since it uses less digits than its factorization.

918190910920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354865 (or 354861 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 49.

The spelling of 918190910920 in words is "nine hundred eighteen billion, one hundred ninety million, nine hundred ten thousand, nine hundred twenty".