199000191803 has 4 divisors (see below), whose sum is σ = 227428790640. Its totient is φ = 170571592968.

The previous prime is 199000191763. The next prime is 199000191809. The reversal of 199000191803 is 308191000991.

It is a happy number.

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

It is not a de Polignac number, because 199000191803 - 2⁶ = 199000191739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199000191809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14214299408 + ... + 14214299421.

It is an arithmetic number, because the mean of its divisors is an integer number (56857197660).

Almost surely, 2^199000191803 is an apocalyptic number.

199000191803 is a deficient number, since it is larger than the sum of its proper divisors (28428598837).

199000191803 is an equidigital number, since it uses as much as digits as its factorization.

199000191803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28428598836.

The product of its (nonzero) digits is 17496, while the sum is 41.

The spelling of 199000191803 in words is "one hundred ninety-nine billion, one hundred ninety-one thousand, eight hundred three".