189656197 has 8 divisors (see below), whose sum is σ = 191168640. Its totient is φ = 188150160.

The previous prime is 189656177. The next prime is 189656227. The reversal of 189656197 is 791656981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189656197 - 2¹¹ = 189654149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189656107) 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, 69888 + ... + 72550.

It is an arithmetic number, because the mean of its divisors is an integer number (23896080).

Almost surely, 2^189656197 is an apocalyptic number.

It is an amenable number.

189656197 is a deficient number, since it is larger than the sum of its proper divisors (1512443).

189656197 is a wasteful number, since it uses less digits than its factorization.

189656197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203.

The product of its digits is 816480, while the sum is 52.

The square root of 189656197 is about 13771.5720598630. The cubic root of 189656197 is about 574.5427462441.

The spelling of 189656197 in words is "one hundred eighty-nine million, six hundred fifty-six thousand, one hundred ninety-seven".