190691107 has 4 divisors (see below), whose sum is σ = 191222640. Its totient is φ = 190159576.

The previous prime is 190691099. The next prime is 190691119. The reversal of 190691107 is 701196091.

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

It is a cyclic number.

It is not a de Polignac number, because 190691107 - 2³ = 190691099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190691147) 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 3 ways as a sum of consecutive naturals, for example, 265228 + ... + 265945.

It is an arithmetic number, because the mean of its divisors is an integer number (47805660).

Almost surely, 2^190691107 is an apocalyptic number.

190691107 is a deficient number, since it is larger than the sum of its proper divisors (531533).

190691107 is an equidigital number, since it uses as much as digits as its factorization.

190691107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531532.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 190691107 is about 13809.0950825896. The cubic root of 190691107 is about 575.5859000809.

The spelling of 190691107 in words is "one hundred ninety million, six hundred ninety-one thousand, one hundred seven".