189415000 has 80 divisors (see below), whose sum is σ = 454635720. Its totient is φ = 73920000.

The previous prime is 189414983. The next prime is 189415019. The reversal of 189415000 is 514981.

It is a happy number.

189415000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 189415000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 214560 + ... + 215440.

Almost surely, 2^189415000 is an apocalyptic number.

189415000 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 189415000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227317860).

189415000 is an abundant number, since it is smaller than the sum of its proper divisors (265220720).

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

189415000 is an equidigital number, since it uses as much as digits as its factorization.

189415000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 189415000 is about 13762.8122126257. The cubic root of 189415000 is about 574.2990829269.

Adding to 189415000 its reverse (514981), we get a palindrome (189929981).

The spelling of 189415000 in words is "one hundred eighty-nine million, four hundred fifteen thousand".