189844992 has 160 divisors (see below), whose sum is σ = 581391360. Its totient is φ = 61102080.

The previous prime is 189844981. The next prime is 189844999. The reversal of 189844992 is 299448981.

It is a super-2 number, since 2×189844992² = 72082241974960128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 (189844999) 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, 428323 + ... + 428765.

It is an arithmetic number, because the mean of its divisors is an integer number (3633696).

Almost surely, 2^189844992 is an apocalyptic number.

189844992 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 189844992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290695680).

189844992 is an abundant number, since it is smaller than the sum of its proper divisors (391546368).

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

189844992 is an equidigital number, since it uses as much as digits as its factorization.

189844992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 479 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 189844992 is about 13778.4248736929. The cubic root of 189844992 is about 574.7333276341.

The spelling of 189844992 in words is "one hundred eighty-nine million, eight hundred forty-four thousand, nine hundred ninety-two".