196124609 has 2 divisors, whose sum is σ = 196124610. Its totient is φ = 196124608.

The previous prime is 196124581. The next prime is 196124639. The reversal of 196124609 is 906421691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196000000 + 124609 = 14000^2 + 353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196124609 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (196124639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98062304 + 98062305.

It is an arithmetic number, because the mean of its divisors is an integer number (98062305).

Almost surely, 2^196124609 is an apocalyptic number.

It is an amenable number.

196124609 is a deficient number, since it is larger than the sum of its proper divisors (1).

196124609 is an equidigital number, since it uses as much as digits as its factorization.

196124609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 196124609 is about 14004.4496143190. The cubic root of 196124609 is about 581.0016471050.

It can be divided in two parts, 196 and 124609, that multiplied together give a square (24423364 = 4942²).

The spelling of 196124609 in words is "one hundred ninety-six million, one hundred twenty-four thousand, six hundred nine".