189864792 has 96 divisors (see below), whose sum is σ = 561768480. Its totient is φ = 57576960.

The previous prime is 189864743. The next prime is 189864799. The reversal of 189864792 is 297468981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189864799) 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 23 ways as a sum of consecutive naturals, for example, 65028 + ... + 67884.

It is an arithmetic number, because the mean of its divisors is an integer number (5851755).

Almost surely, 2^189864792 is an apocalyptic number.

189864792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189864792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280884240).

189864792 is an abundant number, since it is smaller than the sum of its proper divisors (371903688).

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

189864792 is a wasteful number, since it uses less digits than its factorization.

189864792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953 (or 2946 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 189864792 is about 13779.1433696003. The cubic root of 189864792 is about 574.7533076612.

The spelling of 189864792 in words is "one hundred eighty-nine million, eight hundred sixty-four thousand, seven hundred ninety-two".