189969150 has 96 divisors (see below), whose sum is σ = 541393920. Its totient is φ = 43182720.

The previous prime is 189969089. The next prime is 189969161. The reversal of 189969150 is 51969981.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 189969150.

It is a congruent number.

It is an unprimeable number.

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, 250572 + ... + 251328.

It is an arithmetic number, because the mean of its divisors is an integer number (5639520).

Almost surely, 2^189969150 is an apocalyptic number.

189969150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 189969150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270696960).

189969150 is an abundant number, since it is smaller than the sum of its proper divisors (351424770).

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

189969150 is a wasteful number, since it uses less digits than its factorization.

189969150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 48.

The square root of 189969150 is about 13782.9296595463. The cubic root of 189969150 is about 574.8585915656.

The spelling of 189969150 in words is "one hundred eighty-nine million, nine hundred sixty-nine thousand, one hundred fifty".