1000919091 has 4 divisors (see below), whose sum is σ = 1334558792. Its totient is φ = 667279392.

The previous prime is 1000919063. The next prime is 1000919093. The reversal of 1000919091 is 1909190001.

1000919091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1000919091 - 2⁶ = 1000919027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000919093) 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, 166819846 + ... + 166819851.

It is an arithmetic number, because the mean of its divisors is an integer number (333639698).

Almost surely, 2^1000919091 is an apocalyptic number.

1000919091 is a deficient number, since it is larger than the sum of its proper divisors (333639701).

1000919091 is an equidigital number, since it uses as much as digits as its factorization.

1000919091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333639700.

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 1000919091 is about 31637.3053688205. The cubic root of 1000919091 is about 1000.3062698559.

The spelling of 1000919091 in words is "one billion, nine hundred nineteen thousand, ninety-one".