189281199 has 4 divisors (see below), whose sum is σ = 252374936. Its totient is φ = 126187464.

The previous prime is 189281177. The next prime is 189281207. The reversal of 189281199 is 991182981.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 189281199 - 2⁵ = 189281167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189281129) 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, 31546864 + ... + 31546869.

It is an arithmetic number, because the mean of its divisors is an integer number (63093734).

Almost surely, 2^189281199 is an apocalyptic number.

189281199 is a deficient number, since it is larger than the sum of its proper divisors (63093737).

189281199 is an equidigital number, since it uses as much as digits as its factorization.

189281199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63093736.

The product of its digits is 93312, while the sum is 48.

The square root of 189281199 is about 13757.9503924095. The cubic root of 189281199 is about 574.1638245575.

It can be divided in two parts, 18928119 and 9, that multiplied together give a palindrome (170353071).

The spelling of 189281199 in words is "one hundred eighty-nine million, two hundred eighty-one thousand, one hundred ninety-nine".