1700172161 has 2 divisors, whose sum is σ = 1700172162. Its totient is φ = 1700172160.

The previous prime is 1700172151. The next prime is 1700172181. The reversal of 1700172161 is 1612710071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1147922161 + 552250000 = 33881^2 + 23500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1700172161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1700172161.

It is not a weakly prime, because it can be changed into another prime (1700172151) 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, 850086080 + 850086081.

It is an arithmetic number, because the mean of its divisors is an integer number (850086081).

Almost surely, 2^1700172161 is an apocalyptic number.

It is an amenable number.

1700172161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1700172161 is an equidigital number, since it uses as much as digits as its factorization.

1700172161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 26.

The square root of 1700172161 is about 41233.1439621089. The cubic root of 1700172161 is about 1193.5234790497.

The spelling of 1700172161 in words is "one billion, seven hundred million, one hundred seventy-two thousand, one hundred sixty-one".