190830900 has 144 divisors (see below), whose sum is σ = 600211584. Its totient is φ = 46533120.

The previous prime is 190830877. The next prime is 190830907. The reversal of 190830900 is 9038091.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190830907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 651154 + ... + 651446.

It is an arithmetic number, because the mean of its divisors is an integer number (4168136).

Almost surely, 2^190830900 is an apocalyptic number.

190830900 is a gapful number since it is divisible by the number (10) 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 190830900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300105792).

190830900 is an abundant number, since it is smaller than the sum of its proper divisors (409380684).

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

190830900 is a wasteful number, since it uses less digits than its factorization.

190830900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 190830900 is about 13814.1557831089. The cubic root of 190830900 is about 575.7265170660.

Adding to 190830900 its reverse (9038091), we get a palindrome (199868991).

The spelling of 190830900 in words is "one hundred ninety million, eight hundred thirty thousand, nine hundred".