1010091918191 has 4 divisors (see below), whose sum is σ = 1014541662552. Its totient is φ = 1005642173832.

The previous prime is 1010091918163. The next prime is 1010091918233. The reversal of 1010091918191 is 1918191900101.

It is a happy number.

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 1010091918191 - 2¹⁰ = 1010091917167 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 (1010091918131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224871840 + ... + 2224872293.

It is an arithmetic number, because the mean of its divisors is an integer number (253635415638).

Almost surely, 2^{1010091918191} is an apocalyptic number.

1010091918191 is a deficient number, since it is larger than the sum of its proper divisors (4449744361).

1010091918191 is an equidigital number, since it uses as much as digits as its factorization.

1010091918191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4449744360.

The product of its (nonzero) digits is 5832, while the sum is 41.

The spelling of 1010091918191 in words is "one trillion, ten billion, ninety-one million, nine hundred eighteen thousand, one hundred ninety-one".