190366091 has 4 divisors (see below), whose sum is σ = 190598784. Its totient is φ = 190133400.

The previous prime is 190366087. The next prime is 190366151. The reversal of 190366091 is 190663091.

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 190366091 - 2² = 190366087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190366291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115115 + ... + 116756.

It is an arithmetic number, because the mean of its divisors is an integer number (47649696).

Almost surely, 2^190366091 is an apocalyptic number.

190366091 is a deficient number, since it is larger than the sum of its proper divisors (232693).

190366091 is an equidigital number, since it uses as much as digits as its factorization.

190366091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232692.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 190366091 is about 13797.3218778138. The cubic root of 190366091 is about 575.2587024914.

The spelling of 190366091 in words is "one hundred ninety million, three hundred sixty-six thousand, ninety-one".