171394673 has 2 divisors, whose sum is σ = 171394674. Its totient is φ = 171394672.

The previous prime is 171394661. The next prime is 171394679. The reversal of 171394673 is 376493171.

171394673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151609969 + 19784704 = 12313^2 + 4448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171394673 is a prime.

It is a super-2 number, since 2×171394673² = 58752267865553858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 171394673.

It is not a weakly prime, because it can be changed into another prime (171394679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85697336 + 85697337.

It is an arithmetic number, because the mean of its divisors is an integer number (85697337).

Almost surely, 2^171394673 is an apocalyptic number.

It is an amenable number.

171394673 is a deficient number, since it is larger than the sum of its proper divisors (1).

171394673 is an equidigital number, since it uses as much as digits as its factorization.

171394673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 41.

The square root of 171394673 is about 13091.7788325346. The cubic root of 171394673 is about 555.4766059914.

It can be divided in two parts, 17139 and 4673, that added together give a palindrome (21812).

The spelling of 171394673 in words is "one hundred seventy-one million, three hundred ninety-four thousand, six hundred seventy-three".