189800095 has 4 divisors (see below), whose sum is σ = 227760120. Its totient is φ = 151840072.

The previous prime is 189800089. The next prime is 189800129. The reversal of 189800095 is 590008981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 590008981 = 163 ⋅3619687.

It is a cyclic number.

It is not a de Polignac number, because 189800095 - 2¹⁵ = 189767327 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18980005 + ... + 18980014.

It is an arithmetic number, because the mean of its divisors is an integer number (56940030).

Almost surely, 2^189800095 is an apocalyptic number.

189800095 is a deficient number, since it is larger than the sum of its proper divisors (37960025).

189800095 is an equidigital number, since it uses as much as digits as its factorization.

189800095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37960024.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 189800095 is about 13776.7955272625. The cubic root of 189800095 is about 574.6880172709.

The spelling of 189800095 in words is "one hundred eighty-nine million, eight hundred thousand, ninety-five".