167161565 has 8 divisors (see below), whose sum is σ = 202580568. Its totient is φ = 132404800.

The previous prime is 167161549. The next prime is 167161571. The reversal of 167161565 is 565161761.

It can be written as a sum of positive squares in 4 ways, for example, as 63712324 + 103449241 = 7982^2 + 10171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 167161565 - 2⁴ = 167161549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 165002 + ... + 166011.

It is an arithmetic number, because the mean of its divisors is an integer number (25322571).

Almost surely, 2^167161565 is an apocalyptic number.

It is an amenable number.

167161565 is a deficient number, since it is larger than the sum of its proper divisors (35419003).

167161565 is a wasteful number, since it uses less digits than its factorization.

167161565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331119.

The product of its digits is 37800, while the sum is 38.

The square root of 167161565 is about 12929.0976096555. The cubic root of 167161565 is about 550.8653759859.

It can be divided in two parts, 16716 and 1565, that added together give a palindrome (18281).

The spelling of 167161565 in words is "one hundred sixty-seven million, one hundred sixty-one thousand, five hundred sixty-five".