19090195 has 4 divisors (see below), whose sum is σ = 22908240. Its totient is φ = 15272152.

The previous prime is 19090189. The next prime is 19090241. The reversal of 19090195 is 59109091.

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 19090195 - 2⁵ = 19090163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19090195.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1909015 + ... + 1909024.

It is an arithmetic number, because the mean of its divisors is an integer number (5727060).

Almost surely, 2^19090195 is an apocalyptic number.

19090195 is a deficient number, since it is larger than the sum of its proper divisors (3818045).

19090195 is an equidigital number, since it uses as much as digits as its factorization.

19090195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818044.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 19090195 is about 4369.2327701783. The cubic root of 19090195 is about 267.2617379407.

The spelling of 19090195 in words is "nineteen million, ninety thousand, one hundred ninety-five".