189998124 has 48 divisors (see below), whose sum is σ = 463771392. Its totient is φ = 60426432.

The previous prime is 189998063. The next prime is 189998129. The reversal of 189998124 is 421899981.

It is not an unprimeable number, because it can be changed into a prime (189998129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168627 + ... + 169749.

It is an arithmetic number, because the mean of its divisors is an integer number (9661904).

Almost surely, 2^189998124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189998124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231885696).

189998124 is an abundant number, since it is smaller than the sum of its proper divisors (273773268).

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

189998124 is a wasteful number, since it uses less digits than its factorization.

189998124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1764 counting only the distinct ones).

The product of its digits is 373248, while the sum is 51.

The square root of 189998124 is about 13783.9807022500. The cubic root of 189998124 is about 574.8878157951.

The spelling of 189998124 in words is "one hundred eighty-nine million, nine hundred ninety-eight thousand, one hundred twenty-four".