197728963 has 4 divisors (see below), whose sum is σ = 197798488. Its totient is φ = 197659440.

The previous prime is 197728939. The next prime is 197728969. The reversal of 197728963 is 369827791.

197728963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 197728963 - 2⁹ = 197728451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197728963.

It is not an unprimeable number, because it can be changed into a prime (197728969) 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, 30306 + ... + 36247.

It is an arithmetic number, because the mean of its divisors is an integer number (49449622).

Almost surely, 2^197728963 is an apocalyptic number.

197728963 is a deficient number, since it is larger than the sum of its proper divisors (69525).

197728963 is an equidigital number, since it uses as much as digits as its factorization.

197728963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69524.

The product of its digits is 1143072, while the sum is 52.

The square root of 197728963 is about 14061.6131009212. The cubic root of 197728963 is about 582.5815985942.

The spelling of 197728963 in words is "one hundred ninety-seven million, seven hundred twenty-eight thousand, nine hundred sixty-three".