167165643 has 4 divisors (see below), whose sum is σ = 222887528. Its totient is φ = 111443760.

The previous prime is 167165623. The next prime is 167165707. The reversal of 167165643 is 346561761.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 167165643 - 2⁵ = 167165611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167165623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27860938 + ... + 27860943.

It is an arithmetic number, because the mean of its divisors is an integer number (55721882).

Almost surely, 2^167165643 is an apocalyptic number.

167165643 is a deficient number, since it is larger than the sum of its proper divisors (55721885).

167165643 is an equidigital number, since it uses as much as digits as its factorization.

167165643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55721884.

The product of its digits is 90720, while the sum is 39.

The square root of 167165643 is about 12929.2553149824. The cubic root of 167165643 is about 550.8698555059.

The spelling of 167165643 in words is "one hundred sixty-seven million, one hundred sixty-five thousand, six hundred forty-three".