190871 has 2 divisors, whose sum is σ = 190872. Its totient is φ = 190870.

The previous prime is 190843. The next prime is 190889. The reversal of 190871 is 178091.

It is a strong prime.

It is an emirp because it is prime and its reverse (178091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190871 - 2⁶ = 190807 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95435 + 95436.

It is an arithmetic number, because the mean of its divisors is an integer number (95436).

2¹⁹⁰⁸⁷¹ is an apocalyptic number.

190871 is a deficient number, since it is larger than the sum of its proper divisors (1).

190871 is an equidigital number, since it uses as much as digits as its factorization.

190871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 190871 is about 436.8878574646. The cubic root of 190871 is about 57.5766840753.

The spelling of 190871 in words is "one hundred ninety thousand, eight hundred seventy-one".