190806165 has 32 divisors (see below), whose sum is σ = 370051200. Its totient is φ = 92511360.

The previous prime is 190806163. The next prime is 190806191. The reversal of 190806165 is 561608091.

It is not a de Polignac number, because 190806165 - 2¹ = 190806163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190806163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62760 + ... + 65729.

It is an arithmetic number, because the mean of its divisors is an integer number (11564100).

Almost surely, 2^190806165 is an apocalyptic number.

190806165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190806165 is a deficient number, since it is larger than the sum of its proper divisors (179245035).

190806165 is a wasteful number, since it uses less digits than its factorization.

190806165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128514 (or 128508 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 190806165 is about 13813.2604768027. The cubic root of 190806165 is about 575.7016412716.

The spelling of 190806165 in words is "one hundred ninety million, eight hundred six thousand, one hundred sixty-five".