165169058 has 4 divisors (see below), whose sum is σ = 247753590. Its totient is φ = 82584528.

The previous prime is 165169057. The next prime is 165169061. The reversal of 165169058 is 850961561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 850961561 = 15061 ⋅56501.

It can be written as a sum of positive squares in only one way, i.e., 154430329 + 10738729 = 12427^2 + 3277^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165169057) 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, 41292263 + ... + 41292266.

Almost surely, 2^165169058 is an apocalyptic number.

165169058 is a deficient number, since it is larger than the sum of its proper divisors (82584532).

165169058 is an equidigital number, since it uses as much as digits as its factorization.

165169058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82584531.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 165169058 is about 12851.8114676492. The cubic root of 165169058 is about 548.6679146213.

The spelling of 165169058 in words is "one hundred sixty-five million, one hundred sixty-nine thousand, fifty-eight".