199800190 has 8 divisors (see below), whose sum is σ = 359640360. Its totient is φ = 79920072.

The previous prime is 199800187. The next prime is 199800191. The reversal of 199800190 is 91008991.

199800190 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×199800190³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199800191) 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, 9990000 + ... + 9990019.

It is an arithmetic number, because the mean of its divisors is an integer number (44955045).

Almost surely, 2^199800190 is an apocalyptic number.

199800190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199800190 is a deficient number, since it is larger than the sum of its proper divisors (159840170).

199800190 is a wasteful number, since it uses less digits than its factorization.

199800190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19980026.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 199800190 is about 14135.0695081418. The cubic root of 199800190 is about 584.6087334237.

The spelling of 199800190 in words is "one hundred ninety-nine million, eight hundred thousand, one hundred ninety".