189620668 has 18 divisors (see below), whose sum is σ = 333910248. Its totient is φ = 94221360.

The previous prime is 189620663. The next prime is 189620681. The reversal of 189620668 is 866026981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189620663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130321 + ... + 131767.

Almost surely, 2^189620668 is an apocalyptic number.

It is an amenable number.

189620668 is a deficient number, since it is larger than the sum of its proper divisors (144289580).

189620668 is a wasteful number, since it uses less digits than its factorization.

189620668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 189620668 is about 13770.2820595658. The cubic root of 189620668 is about 574.5068669278.

The spelling of 189620668 in words is "one hundred eighty-nine million, six hundred twenty thousand, six hundred sixty-eight".