919964908171 has 2 divisors, whose sum is σ = 919964908172. Its totient is φ = 919964908170.

The previous prime is 919964908153. The next prime is 919964908183. The reversal of 919964908171 is 171809469919.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 919964908171 - 2¹³ = 919964899979 is a prime.

It is not a weakly prime, because it can be changed into another prime (919964908271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459982454085 + 459982454086.

It is an arithmetic number, because the mean of its divisors is an integer number (459982454086).

Almost surely, 2^919964908171 is an apocalyptic number.

919964908171 is a deficient number, since it is larger than the sum of its proper divisors (1).

919964908171 is an equidigital number, since it uses as much as digits as its factorization.

919964908171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8817984, while the sum is 64.

The spelling of 919964908171 in words is "nine hundred nineteen billion, nine hundred sixty-four million, nine hundred eight thousand, one hundred seventy-one".