199801834 has 8 divisors (see below), whose sum is σ = 315476640. Its totient is φ = 94642956.

The previous prime is 199801831. The next prime is 199801871. The reversal of 199801834 is 438108991.

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

It is not an unprimeable number, because it can be changed into a prime (199801831) 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, 2628934 + ... + 2629009.

It is an arithmetic number, because the mean of its divisors is an integer number (39434580).

Almost surely, 2^199801834 is an apocalyptic number.

199801834 is a deficient number, since it is larger than the sum of its proper divisors (115674806).

199801834 is a wasteful number, since it uses less digits than its factorization.

199801834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257964.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 199801834 is about 14135.1276612558. The cubic root of 199801834 is about 584.6103368491.

The spelling of 199801834 in words is "one hundred ninety-nine million, eight hundred one thousand, eight hundred thirty-four".