8919090009018 has 144 divisors (see below), whose sum is σ = 22864639824000. Its totient is φ = 2504694576384.

The previous prime is 8919090009017. The next prime is 8919090009073. The reversal of 8919090009018 is 8109000909198.

It is not an unprimeable number, because it can be changed into a prime (8919090009017) 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 71 ways as a sum of consecutive naturals, for example, 427169503 + ... + 427190381.

It is an arithmetic number, because the mean of its divisors is an integer number (158782221000).

Almost surely, 2^{8919090009018} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8919090009018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11432319912000).

8919090009018 is an abundant number, since it is smaller than the sum of its proper divisors (13945549814982).

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

8919090009018 is a wasteful number, since it uses less digits than its factorization.

8919090009018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29169 (or 29159 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 54.

The spelling of 8919090009018 in words is "eight trillion, nine hundred nineteen billion, ninety million, nine thousand, eighteen".