1009091010018 has 288 divisors, whose sum is σ = 2573089706304. Its totient is φ = 262919913984.

The previous prime is 1009091010001. The next prime is 1009091010029. The reversal of 1009091010018 is 8100101909001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2160794221 + ... + 2160794687.

It is an arithmetic number, because the mean of its divisors is an integer number (8934339258).

Almost surely, 2^{1009091010018} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1009091010018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286544853152).

1009091010018 is an abundant number, since it is smaller than the sum of its proper divisors (1563998696286).

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

1009091010018 is a wasteful number, since it uses less digits than its factorization.

1009091010018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 30.

Adding to 1009091010018 its reverse (8100101909001), we get a palindrome (9109192919019).

The spelling of 1009091010018 in words is "one trillion, nine billion, ninety-one million, ten thousand, eighteen".