198954 has 24 divisors (see below), whose sum is σ = 492960. Its totient is φ = 56808.

The previous prime is 198953. The next prime is 198959. The reversal of 198954 is 459891.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198954.

It is not an unprimeable number, because it can be changed into a prime (198953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 664 + ... + 915.

It is an arithmetic number, because the mean of its divisors is an integer number (20540).

2¹⁹⁸⁹⁵⁴ is an apocalyptic number.

198954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

198954 is an abundant number, since it is smaller than the sum of its proper divisors (294006).

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

198954 is a wasteful number, since it uses less digits than its factorization.

198954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1591 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 198954 is about 446.0425988625. The cubic root of 198954 is about 58.3782257601.

The spelling of 198954 in words is "one hundred ninety-eight thousand, nine hundred fifty-four".