199000191802 has 4 divisors (see below), whose sum is σ = 298500287706. Its totient is φ = 99500095900.

The previous prime is 199000191763. The next prime is 199000191809. The reversal of 199000191802 is 208191000991.

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

It can be written as a sum of positive squares in only one way, i.e., 195301241041 + 3698950761 = 441929^2 + 60819^2 .

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49750047949 + ... + 49750047952.

Almost surely, 2^199000191802 is an apocalyptic number.

199000191802 is a deficient number, since it is larger than the sum of its proper divisors (99500095904).

199000191802 is an equidigital number, since it uses as much as digits as its factorization.

199000191802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99500095903.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 199000191802 in words is "one hundred ninety-nine billion, one hundred ninety-one thousand, eight hundred two".