171100849 has 2 divisors, whose sum is σ = 171100850. Its totient is φ = 171100848.

The previous prime is 171100847. The next prime is 171100901. The reversal of 171100849 is 948001171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149010849 + 22090000 = 12207^2 + 4700^2 .

It is a cyclic number.

It is not a de Polignac number, because 171100849 - 2¹ = 171100847 is a prime.

Together with 171100847, it forms a pair of twin primes.

It is equal to p_9561208 and since 171100849 and 9561208 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171100849.

It is not a weakly prime, because it can be changed into another prime (171100847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85550424 + 85550425.

It is an arithmetic number, because the mean of its divisors is an integer number (85550425).

Almost surely, 2^171100849 is an apocalyptic number.

It is an amenable number.

171100849 is a deficient number, since it is larger than the sum of its proper divisors (1).

171100849 is an equidigital number, since it uses as much as digits as its factorization.

171100849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 171100849 is about 13080.5523201431. The cubic root of 171100849 is about 555.1590043025.

The spelling of 171100849 in words is "one hundred seventy-one million, one hundred thousand, eight hundred forty-nine".