1001919090919 has 2 divisors, whose sum is σ = 1001919090920. Its totient is φ = 1001919090918.

The previous prime is 1001919090883. The next prime is 1001919090947. The reversal of 1001919090919 is 9190909191001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001919090919 - 2³³ = 993329156327 is a prime.

It is a super-2 number, since 2×1001919090919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001919090979) 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 as a sum of consecutive naturals, namely, 500959545459 + 500959545460.

It is an arithmetic number, because the mean of its divisors is an integer number (500959545460).

Almost surely, 2^{1001919090919} is an apocalyptic number.

1001919090919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001919090919 is an equidigital number, since it uses as much as digits as its factorization.

1001919090919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59049, while the sum is 49.

The spelling of 1001919090919 in words is "one trillion, one billion, nine hundred nineteen million, ninety thousand, nine hundred nineteen".