199851027 has 8 divisors (see below), whose sum is σ = 267642816. Its totient is φ = 132646632.

The previous prime is 199851019. The next prime is 199851037. The reversal of 199851027 is 720158991.

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

It is not a de Polignac number, because 199851027 - 2³ = 199851019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199851027.

It is not an unprimeable number, because it can be changed into a prime (199851007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146053 + ... + 147414.

It is an arithmetic number, because the mean of its divisors is an integer number (33455352).

Almost surely, 2^199851027 is an apocalyptic number.

199851027 is a deficient number, since it is larger than the sum of its proper divisors (67791789).

199851027 is a wasteful number, since it uses less digits than its factorization.

199851027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293697.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 199851027 is about 14136.8676516405. The cubic root of 199851027 is about 584.6583116780.

It can be divided in two parts, 19985 and 1027, that added together give a palindrome (21012).

The spelling of 199851027 in words is "one hundred ninety-nine million, eight hundred fifty-one thousand, twenty-seven".