190165109 has 2 divisors, whose sum is σ = 190165110. Its totient is φ = 190165108.

The previous prime is 190165069. The next prime is 190165159. The reversal of 190165109 is 901561091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189145009 + 1020100 = 13753^2 + 1010^2 .

It is a cyclic number.

It is not a de Polignac number, because 190165109 - 2⁸ = 190164853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190165159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95082554 + 95082555.

It is an arithmetic number, because the mean of its divisors is an integer number (95082555).

Almost surely, 2^190165109 is an apocalyptic number.

It is an amenable number.

190165109 is a deficient number, since it is larger than the sum of its proper divisors (1).

190165109 is an equidigital number, since it uses as much as digits as its factorization.

190165109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 190165109 is about 13790.0365844330. The cubic root of 190165109 is about 575.0561850580.

The spelling of 190165109 in words is "one hundred ninety million, one hundred sixty-five thousand, one hundred nine".