189361660 has 12 divisors (see below), whose sum is σ = 397659528. Its totient is φ = 75744656.

The previous prime is 189361559. The next prime is 189361681. The reversal of 189361660 is 66163981.

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 3 ways as a sum of consecutive naturals, for example, 4734022 + ... + 4734061.

It is an arithmetic number, because the mean of its divisors is an integer number (33138294).

Almost surely, 2^189361660 is an apocalyptic number.

189361660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189361660 is an abundant number, since it is smaller than the sum of its proper divisors (208297868).

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

189361660 is a wasteful number, since it uses less digits than its factorization.

189361660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468092 (or 9468090 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 189361660 is about 13760.8742454831. The cubic root of 189361660 is about 574.2451695815.

The spelling of 189361660 in words is "one hundred eighty-nine million, three hundred sixty-one thousand, six hundred sixty".