189601660 has 12 divisors (see below), whose sum is σ = 398163528. Its totient is φ = 75840656.

The previous prime is 189601649. The next prime is 189601661. The reversal of 189601660 is 66106981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189601661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4740022 + ... + 4740061.

It is an arithmetic number, because the mean of its divisors is an integer number (33180294).

Almost surely, 2^189601660 is an apocalyptic number.

189601660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189601660 is an abundant number, since it is smaller than the sum of its proper divisors (208561868).

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

189601660 is a wasteful number, since it uses less digits than its factorization.

189601660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9480092 (or 9480090 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 189601660 is about 13769.5918603276. The cubic root of 189601660 is about 574.4876696684.

The spelling of 189601660 in words is "one hundred eighty-nine million, six hundred one thousand, six hundred sixty".