189641406668 has 24 divisors (see below), whose sum is σ = 379810368000. Its totient is φ = 81161841168.

The previous prime is 189641406667. The next prime is 189641406677. The reversal of 189641406668 is 866604146981.

It is not an unprimeable number, because it can be changed into a prime (189641406667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4689818 + ... + 4730081.

It is an arithmetic number, because the mean of its divisors is an integer number (15825432000).

Almost surely, 2^189641406668 is an apocalyptic number.

It is an amenable number.

189641406668 is an abundant number, since it is smaller than the sum of its proper divisors (190168961332).

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

189641406668 is a wasteful number, since it uses less digits than its factorization.

189641406668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9420629 (or 9420627 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 59.

The spelling of 189641406668 in words is "one hundred eighty-nine billion, six hundred forty-one million, four hundred six thousand, six hundred sixty-eight".