189242508 has 144 divisors (see below), whose sum is σ = 582731520. Its totient is φ = 47246976.

The previous prime is 189242503. The next prime is 189242509. The reversal of 189242508 is 805242981.

189242508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (189242503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144585 + ... + 145887.

Almost surely, 2^189242508 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 189242508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291365760).

189242508 is an abundant number, since it is smaller than the sum of its proper divisors (393489012).

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

189242508 is a wasteful number, since it uses less digits than its factorization.

189242508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 189242508 is about 13756.5441881310. The cubic root of 189242508 is about 574.1247002520.

The spelling of 189242508 in words is "one hundred eighty-nine million, two hundred forty-two thousand, five hundred eight".