199804589170 has 8 divisors (see below), whose sum is σ = 359648260524. Its totient is φ = 79921835664.

The previous prime is 199804589161. The next prime is 199804589189. The reversal of 199804589170 is 71985408991.

It can be written as a sum of positive squares in 2 ways, for example, as 199779499089 + 25090081 = 446967^2 + 5009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 199804589099 and 199804589108.

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, 9990229449 + ... + 9990229468.

Almost surely, 2^199804589170 is an apocalyptic number.

199804589170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199804589170 is a deficient number, since it is larger than the sum of its proper divisors (159843671354).

199804589170 is a wasteful number, since it uses less digits than its factorization.

199804589170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19980458924.

The product of its (nonzero) digits is 6531840, while the sum is 61.

The spelling of 199804589170 in words is "one hundred ninety-nine billion, eight hundred four million, five hundred eighty-nine thousand, one hundred seventy".