189773380 has 48 divisors (see below), whose sum is σ = 426142080. Its totient is φ = 70737408.

The previous prime is 189773377. The next prime is 189773393. The reversal of 189773380 is 83377981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 189773380.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32311 + ... + 37729.

It is an arithmetic number, because the mean of its divisors is an integer number (8877960).

Almost surely, 2^189773380 is an apocalyptic number.

189773380 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 189773380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213071040).

189773380 is an abundant number, since it is smaller than the sum of its proper divisors (236368700).

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

189773380 is a wasteful number, since it uses less digits than its factorization.

189773380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548 (or 5546 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 189773380 is about 13775.8259280524. The cubic root of 189773380 is about 574.6610529171.

The spelling of 189773380 in words is "one hundred eighty-nine million, seven hundred seventy-three thousand, three hundred eighty".