198642384 has 30 divisors (see below), whose sum is σ = 555923186. Its totient is φ = 66214080.

The previous prime is 198642383. The next prime is 198642403. The reversal of 198642384 is 483246891.

It is a happy number.

198642384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 99440784 + 99201600 = 9972^2 + 9960^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198642383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 689587 + ... + 689874.

Almost surely, 2^198642384 is an apocalyptic number.

It is an amenable number.

198642384 is an abundant number, since it is smaller than the sum of its proper divisors (357280802).

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

198642384 is a wasteful number, since it uses less digits than its factorization.

198642384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379475 (or 1379466 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 198642384 is about 14094.0549168790. The cubic root of 198642384 is about 583.4773111454.

It can be divided in two parts, 19 and 8642384, that added together give a triangular number (8642403 = T₄₁₅₇).

The spelling of 198642384 in words is "one hundred ninety-eight million, six hundred forty-two thousand, three hundred eighty-four".