9181819100001 has 64 divisors (see below), whose sum is σ = 13149168721920. Its totient is φ = 5684164358400.

The previous prime is 9181819099987. The next prime is 9181819100023. The reversal of 9181819100001 is 1000019181819.

It is not a de Polignac number, because 9181819100001 - 2⁵ = 9181819099969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9181819100501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3905493976 + ... + 3905496326.

It is an arithmetic number, because the mean of its divisors is an integer number (205455761280).

Almost surely, 2^{9181819100001} is an apocalyptic number.

It is an amenable number.

9181819100001 is a deficient number, since it is larger than the sum of its proper divisors (3967349621919).

9181819100001 is a wasteful number, since it uses less digits than its factorization.

9181819100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166.

The product of its (nonzero) digits is 5184, while the sum is 39.

The spelling of 9181819100001 in words is "nine trillion, one hundred eighty-one billion, eight hundred nineteen million, one hundred thousand, one".