165173843 has 2 divisors, whose sum is σ = 165173844. Its totient is φ = 165173842.

The previous prime is 165173779. The next prime is 165173849. The reversal of 165173843 is 348371561.

165173843 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 is a cyclic number.

It is not a de Polignac number, because 165173843 - 2⁶ = 165173779 is a prime.

It is a super-2 number, since 2×165173843² = 54564796822777298, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 165173797 and 165173806.

It is not a weakly prime, because it can be changed into another prime (165173849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82586921 + 82586922.

It is an arithmetic number, because the mean of its divisors is an integer number (82586922).

Almost surely, 2^165173843 is an apocalyptic number.

165173843 is a deficient number, since it is larger than the sum of its proper divisors (1).

165173843 is an equidigital number, since it uses as much as digits as its factorization.

165173843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 165173843 is about 12851.9976268283. The cubic root of 165173843 is about 548.6732129313.

The spelling of 165173843 in words is "one hundred sixty-five million, one hundred seventy-three thousand, eight hundred forty-three".