189378000 has 400 divisors, whose sum is σ = 786449664. Its totient is φ = 43027200.

The previous prime is 189377989. The next prime is 189378053. The reversal of 189378000 is 873981.

189378000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1133917 + ... + 1134083.

Almost surely, 2^189378000 is an apocalyptic number.

189378000 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 189378000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393224832).

189378000 is an abundant number, since it is smaller than the sum of its proper divisors (597071664).

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

189378000 is a wasteful number, since it uses less digits than its factorization.

189378000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 189378000 is about 13761.4679449541. The cubic root of 189378000 is about 574.2616862938.

The spelling of 189378000 in words is "one hundred eighty-nine million, three hundred seventy-eight thousand".