165511163 has 2 divisors, whose sum is σ = 165511164. Its totient is φ = 165511162.

The previous prime is 165511123. The next prime is 165511169. The reversal of 165511163 is 361115561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165511163 - 2⁸ = 165510907 is a prime.

It is a super-2 number, since 2×165511163² = 54787890155225138, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165511169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82755581 + 82755582.

It is an arithmetic number, because the mean of its divisors is an integer number (82755582).

Almost surely, 2^165511163 is an apocalyptic number.

165511163 is a deficient number, since it is larger than the sum of its proper divisors (1).

165511163 is an equidigital number, since it uses as much as digits as its factorization.

165511163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 29.

The square root of 165511163 is about 12865.1141852686. The cubic root of 165511163 is about 549.0464612975.

The spelling of 165511163 in words is "one hundred sixty-five million, five hundred eleven thousand, one hundred sixty-three".