189388192 has 48 divisors (see below), whose sum is σ = 435214080. Its totient is φ = 79435008.

The previous prime is 189388127. The next prime is 189388193. The reversal of 189388192 is 291883981.

It is not an unprimeable number, because it can be changed into a prime (189388193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1534 + ... + 19522.

It is an arithmetic number, because the mean of its divisors is an integer number (9066960).

Almost surely, 2^189388192 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 189388192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217607040).

189388192 is an abundant number, since it is smaller than the sum of its proper divisors (245825888).

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

189388192 is a wasteful number, since it uses less digits than its factorization.

189388192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18053 (or 18045 counting only the distinct ones).

The product of its digits is 248832, while the sum is 49.

The square root of 189388192 is about 13761.8382493038. The cubic root of 189388192 is about 574.2719880362.

The spelling of 189388192 in words is "one hundred eighty-nine million, three hundred eighty-eight thousand, one hundred ninety-two".