199854851 has 16 divisors (see below), whose sum is σ = 231458304. Its totient is φ = 169029504.

The previous prime is 199854827. The next prime is 199854859. The reversal of 199854851 is 158458991.

199854851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-199854851 is a prime.

It is a super-2 number, since 2×199854851² = 79883922936464402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 199854851.

It is not an unprimeable number, because it can be changed into a prime (199854859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242426 + ... + 243248.

It is an arithmetic number, because the mean of its divisors is an integer number (14466144).

Almost surely, 2^199854851 is an apocalyptic number.

199854851 is a deficient number, since it is larger than the sum of its proper divisors (31603453).

199854851 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (199854850) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1250).

199854851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250.

The product of its digits is 518400, while the sum is 50.

The square root of 199854851 is about 14137.0029001907. The cubic root of 199854851 is about 584.6620406542.

The spelling of 199854851 in words is "one hundred ninety-nine million, eight hundred fifty-four thousand, eight hundred fifty-one".