190363409 has 4 divisors (see below), whose sum is σ = 195508404. Its totient is φ = 185218416.

The previous prime is 190363403. The next prime is 190363417. The reversal of 190363409 is 904363091.

190363409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 904363091 = 211 ⋅4286081.

It can be written as a sum of positive squares in 2 ways, for example, as 182115025 + 8248384 = 13495^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 190363409 - 2¹⁶ = 190297873 is a prime.

It is a super-2 number, since 2×190363409² = 72476454972202562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190363403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572442 + ... + 2572515.

It is an arithmetic number, because the mean of its divisors is an integer number (48877101).

Almost surely, 2^190363409 is an apocalyptic number.

It is an amenable number.

190363409 is a deficient number, since it is larger than the sum of its proper divisors (5144995).

190363409 is an equidigital number, since it uses as much as digits as its factorization.

190363409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144994.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 190363409 is about 13797.2246846966. The cubic root of 190363409 is about 575.2560009404.

The spelling of 190363409 in words is "one hundred ninety million, three hundred sixty-three thousand, four hundred nine".