198154 has 8 divisors (see below), whose sum is σ = 324288. Its totient is φ = 90060.

The previous prime is 198139. The next prime is 198173. The reversal of 198154 is 451891.

It is a happy number.

198154 is nontrivially palindromic in base 6.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4482 + ... + 4525.

It is an arithmetic number, because the mean of its divisors is an integer number (40536).

2¹⁹⁸¹⁵⁴ is an apocalyptic number.

198154 is a deficient number, since it is larger than the sum of its proper divisors (126134).

198154 is a wasteful number, since it uses less digits than its factorization.

198154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9020.

The product of its digits is 1440, while the sum is 28.

The square root of 198154 is about 445.1449202226. The cubic root of 198154 is about 58.2998737820.

The spelling of 198154 in words is "one hundred ninety-eight thousand, one hundred fifty-four".