199996158 has 16 divisors (see below), whose sum is σ = 401204736. Its totient is φ = 66463320.

The previous prime is 199996157. The next prime is 199996169. The reversal of 199996158 is 851699991.

It is a junction number, because it is equal to n+sod(n) for n = 199996098 and 199996107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199996157) 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, 48366 + ... + 52337.

It is an arithmetic number, because the mean of its divisors is an integer number (25075296).

Almost surely, 2^199996158 is an apocalyptic number.

199996158 is an abundant number, since it is smaller than the sum of its proper divisors (201208578).

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

199996158 is a wasteful number, since it uses less digits than its factorization.

199996158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101039.

The product of its digits is 1574640, while the sum is 57.

The square root of 199996158 is about 14141.9997878659. Note that the first 3 decimals coincide. The cubic root of 199996158 is about 584.7998029265.

The spelling of 199996158 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, one hundred fifty-eight".