1000090909191 has 16 divisors (see below), whose sum is σ = 1454799616128. Its totient is φ = 606064898400.

The previous prime is 1000090909133. The next prime is 1000090909193. The reversal of 1000090909191 is 1919090900001.

It is not a de Polignac number, because 1000090909191 - 2⁹ = 1000090908679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000090909193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868540 + ... + 1659681.

It is an arithmetic number, because the mean of its divisors is an integer number (90924976008).

Almost surely, 2^{1000090909191} is an apocalyptic number.

1000090909191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1000090909191 is a deficient number, since it is larger than the sum of its proper divisors (454708706937).

1000090909191 is a wasteful number, since it uses less digits than its factorization.

1000090909191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540222.

The product of its (nonzero) digits is 6561, while the sum is 39.

The spelling of 1000090909191 in words is "one trillion, ninety million, nine hundred nine thousand, one hundred ninety-one".