2191610094019 has 2 divisors, whose sum is σ = 2191610094020. Its totient is φ = 2191610094018.

The previous prime is 2191610094001. The next prime is 2191610094049. The reversal of 2191610094019 is 9104900161912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2191610094019 - 2⁹ = 2191610093507 is a prime.

It is a super-2 number, since 2×2191610094019² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2191610094049) 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, 1095805047009 + 1095805047010.

It is an arithmetic number, because the mean of its divisors is an integer number (1095805047010).

Almost surely, 2^{2191610094019} is an apocalyptic number.

2191610094019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2191610094019 is an equidigital number, since it uses as much as digits as its factorization.

2191610094019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 2191610094019 in words is "two trillion, one hundred ninety-one billion, six hundred ten million, ninety-four thousand, nineteen".