196509123 has 12 divisors (see below), whose sum is σ = 283980840. Its totient is φ = 130944096.

The previous prime is 196509083. The next prime is 196509151. The reversal of 196509123 is 321905691.

It is not a de Polignac number, because 196509123 - 2⁶ = 196509059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196509163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22983 + ... + 30351.

It is an arithmetic number, because the mean of its divisors is an integer number (23665070).

Almost surely, 2^196509123 is an apocalyptic number.

196509123 is a deficient number, since it is larger than the sum of its proper divisors (87471717).

196509123 is a wasteful number, since it uses less digits than its factorization.

196509123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10338 (or 10335 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 196509123 is about 14018.1711717328. The cubic root of 196509123 is about 581.3810953698.

The spelling of 196509123 in words is "one hundred ninety-six million, five hundred nine thousand, one hundred twenty-three".