189350980 has 144 divisors (see below), whose sum is σ = 504693504. Its totient is φ = 58406400.

The previous prime is 189350969. The next prime is 189350989. The reversal of 189350980 is 89053981.

It is not an unprimeable number, because it can be changed into a prime (189350989) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1253905 + ... + 1254055.

It is an arithmetic number, because the mean of its divisors is an integer number (3504816).

Almost surely, 2^189350980 is an apocalyptic number.

189350980 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 189350980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252346752).

189350980 is an abundant number, since it is smaller than the sum of its proper divisors (315342524).

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

189350980 is a wasteful number, since it uses less digits than its factorization.

189350980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 189350980 is about 13760.4861832713. The cubic root of 189350980 is about 574.2343735669.

The spelling of 189350980 in words is "one hundred eighty-nine million, three hundred fifty thousand, nine hundred eighty".