165190229 has 4 divisors (see below), whose sum is σ = 165222060. Its totient is φ = 165158400.

The previous prime is 165190211. The next prime is 165190279. The reversal of 165190229 is 922091561.

165190229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54982225 + 110208004 = 7415^2 + 10498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165190229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165190279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6122 + ... + 19179.

It is an arithmetic number, because the mean of its divisors is an integer number (41305515).

Almost surely, 2^165190229 is an apocalyptic number.

It is an amenable number.

165190229 is a deficient number, since it is larger than the sum of its proper divisors (31831).

165190229 is an equidigital number, since it uses as much as digits as its factorization.

165190229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31830.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 165190229 is about 12852.6350994650. The cubic root of 165190229 is about 548.6913559613.

The spelling of 165190229 in words is "one hundred sixty-five million, one hundred ninety thousand, two hundred twenty-nine".