198642150 has 144 divisors (see below), whose sum is σ = 642220800. Its totient is φ = 43001280.

The previous prime is 198642149. The next prime is 198642151. The reversal of 198642150 is 51246891.

198642150 is a `hidden beast` number, since 1 + 9 + 8 + 642 + 1 + 5 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (198642149) and next prime (198642151).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198642151) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 58191 + ... + 61509.

Almost surely, 2^198642150 is an apocalyptic number.

198642150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 198642150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321110400).

198642150 is an abundant number, since it is smaller than the sum of its proper divisors (443578650).

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

198642150 is a wasteful number, since it uses less digits than its factorization.

198642150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363 (or 3355 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 198642150 is about 14094.0466155040. The cubic root of 198642150 is about 583.4770820339.

The spelling of 198642150 in words is "one hundred ninety-eight million, six hundred forty-two thousand, one hundred fifty".