119191001009 has 2 divisors, whose sum is σ = 119191001010. Its totient is φ = 119191001008.

The previous prime is 119191000979. The next prime is 119191001011. The reversal of 119191001009 is 900100191911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114986775409 + 4204225600 = 339097^2 + 64840^2 .

It is a cyclic number.

It is not a de Polignac number, because 119191001009 - 2²⁰ = 119189952433 is a prime.

Together with 119191001011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (119191001099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59595500504 + 59595500505.

It is an arithmetic number, because the mean of its divisors is an integer number (59595500505).

Almost surely, 2^119191001009 is an apocalyptic number.

It is an amenable number.

119191001009 is a deficient number, since it is larger than the sum of its proper divisors (1).

119191001009 is an equidigital number, since it uses as much as digits as its factorization.

119191001009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 32.

The spelling of 119191001009 in words is "one hundred nineteen billion, one hundred ninety-one million, one thousand, nine".