1001163517818 has 32 divisors (see below), whose sum is σ = 2020903948800. Its totient is φ = 330625647936.

The previous prime is 1001163517789. The next prime is 1001163517843. The reversal of 1001163517818 is 8187153611001.

It is a super-2 number, since 2×1001163517818² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1001163517818.

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, 6769648 + ... + 6915956.

It is an arithmetic number, because the mean of its divisors is an integer number (63153248400).

Almost surely, 2^{1001163517818} is an apocalyptic number.

1001163517818 is an abundant number, since it is smaller than the sum of its proper divisors (1019740430982).

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

1001163517818 is a wasteful number, since it uses less digits than its factorization.

1001163517818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156886.

The product of its (nonzero) digits is 40320, while the sum is 42.

The spelling of 1001163517818 in words is "one trillion, one billion, one hundred sixty-three million, five hundred seventeen thousand, eight hundred eighteen".