199831146 has 16 divisors (see below), whose sum is σ = 412555008. Its totient is φ = 64461600.

The previous prime is 199831139. The next prime is 199831187. The reversal of 199831146 is 641138991.

It is a junction number, because it is equal to n+sod(n) for n = 199831098 and 199831107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536995 + ... + 537366.

It is an arithmetic number, because the mean of its divisors is an integer number (25784688).

Almost surely, 2^199831146 is an apocalyptic number.

199831146 is an abundant number, since it is smaller than the sum of its proper divisors (212723862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199831146 is a wasteful number, since it uses less digits than its factorization.

199831146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074397.

The product of its digits is 46656, while the sum is 42.

The square root of 199831146 is about 14136.1644727274. The cubic root of 199831146 is about 584.6389239412.

The spelling of 199831146 in words is "one hundred ninety-nine million, eight hundred thirty-one thousand, one hundred forty-six".