1010091818191 has 4 divisors (see below), whose sum is σ = 1020092727384. Its totient is φ = 1000090909000.

The previous prime is 1010091818171. The next prime is 1010091818213. The reversal of 1010091818191 is 1918181900101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1010091818191 - 2⁵ = 1010091818159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010091818171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000454445 + ... + 5000454646.

It is an arithmetic number, because the mean of its divisors is an integer number (255023181846).

Almost surely, 2^{1010091818191} is an apocalyptic number.

1010091818191 is a deficient number, since it is larger than the sum of its proper divisors (10000909193).

1010091818191 is a wasteful number, since it uses less digits than its factorization.

1010091818191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000909192.

The product of its (nonzero) digits is 5184, while the sum is 40.

The spelling of 1010091818191 in words is "one trillion, ten billion, ninety-one million, eight hundred eighteen thousand, one hundred ninety-one".