198993100 has 36 divisors (see below), whose sum is σ = 437298400. Its totient is φ = 78586560.

The previous prime is 198993097. The next prime is 198993101. The reversal of 198993100 is 1399891.

It is a super-2 number, since 2×198993100² = 79196507695220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198993101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4695 + ... + 20494.

Almost surely, 2^198993100 is an apocalyptic number.

198993100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198993100 is an abundant number, since it is smaller than the sum of its proper divisors (238305300).

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

198993100 is a wasteful number, since it uses less digits than its factorization.

198993100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25282 (or 25275 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 198993100 is about 14106.4914135302. The cubic root of 198993100 is about 583.8204982513.

The spelling of 198993100 in words is "one hundred ninety-eight million, nine hundred ninety-three thousand, one hundred".