190336809 has 8 divisors (see below), whose sum is σ = 273304192. Its totient is φ = 117130320.

The previous prime is 190336789. The next prime is 190336837. The reversal of 190336809 is 908633091.

190336809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 190336809 - 2⁷ = 190336681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 4880431 = 190336809 / (1 + 9 + 0 + 3 + 3 + 6 + 8 + 0 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (190331809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2440177 + ... + 2440254.

It is an arithmetic number, because the mean of its divisors is an integer number (34163024).

Almost surely, 2^190336809 is an apocalyptic number.

It is an amenable number.

190336809 is a deficient number, since it is larger than the sum of its proper divisors (82967383).

190336809 is a wasteful number, since it uses less digits than its factorization.

190336809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880447.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 190336809 is about 13796.2606890418. The cubic root of 190336809 is about 575.2292056607.

The spelling of 190336809 in words is "one hundred ninety million, three hundred thirty-six thousand, eight hundred nine".