158198 has 8 divisors (see below), whose sum is σ = 240408. Its totient is φ = 78064.

The previous prime is 158189. The next prime is 158201. The reversal of 158198 is 891851.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

158198 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311 + ... + 642.

It is an arithmetic number, because the mean of its divisors is an integer number (30051).

2¹⁵⁸¹⁹⁸ is an apocalyptic number.

158198 is a deficient number, since it is larger than the sum of its proper divisors (82210).

158198 is an equidigital number, since it uses as much as digits as its factorization.

158198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038.

The product of its digits is 2880, while the sum is 32.

The square root of 158198 is about 397.7411218368. The cubic root of 158198 is about 54.0837748582.

The spelling of 158198 in words is "one hundred fifty-eight thousand, one hundred ninety-eight".