165168953 has 2 divisors, whose sum is σ = 165168954. Its totient is φ = 165168952.

The previous prime is 165168943. The next prime is 165168967. The reversal of 165168953 is 359861561.

165168953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150013504 + 15155449 = 12248^2 + 3893^2 .

It is a cyclic number.

It is not a de Polignac number, because 165168953 - 2¹⁰ = 165167929 is a prime.

It is not a weakly prime, because it can be changed into another prime (165168943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82584476 + 82584477.

It is an arithmetic number, because the mean of its divisors is an integer number (82584477).

Almost surely, 2^165168953 is an apocalyptic number.

It is an amenable number.

165168953 is a deficient number, since it is larger than the sum of its proper divisors (1).

165168953 is an equidigital number, since it uses as much as digits as its factorization.

165168953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 165168953 is about 12851.8073826213. The cubic root of 165168953 is about 548.6677983563.

The spelling of 165168953 in words is "one hundred sixty-five million, one hundred sixty-eight thousand, nine hundred fifty-three".