919101000091 has 2 divisors, whose sum is σ = 919101000092. Its totient is φ = 919101000090.

The previous prime is 919101000073. The next prime is 919101000149. The reversal of 919101000091 is 190000101919.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 919101000091 - 2¹⁷ = 919100869019 is a prime.

It is not a weakly prime, because it can be changed into another prime (919101000011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459550500045 + 459550500046.

It is an arithmetic number, because the mean of its divisors is an integer number (459550500046).

Almost surely, 2^919101000091 is an apocalyptic number.

919101000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

919101000091 is an equidigital number, since it uses as much as digits as its factorization.

919101000091 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 31.

The spelling of 919101000091 in words is "nine hundred nineteen billion, one hundred one million, ninety-one", and thus it is an aban number.