189453000 has 128 divisors (see below), whose sum is σ = 644941440. Its totient is φ = 45920000.

The previous prime is 189452941. The next prime is 189453013. The reversal of 189453000 is 354981.

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

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 30130 + ... + 35870.

It is an arithmetic number, because the mean of its divisors is an integer number (5038605).

Almost surely, 2^189453000 is an apocalyptic number.

189453000 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 189453000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322470720).

189453000 is an abundant number, since it is smaller than the sum of its proper divisors (455488440).

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

189453000 is a wasteful number, since it uses less digits than its factorization.

189453000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776 (or 5762 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 189453000 is about 13764.1926751989. The cubic root of 189453000 is about 574.3374852111.

It can be divided in two parts, 18945 and 3000, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 189453000 in words is "one hundred eighty-nine million, four hundred fifty-three thousand".