196091969 has 2 divisors, whose sum is σ = 196091970. Its totient is φ = 196091968.

The previous prime is 196091963. The next prime is 196091977. The reversal of 196091969 is 969190691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184633744 + 11458225 = 13588^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 196091969 - 2⁴ = 196091953 is a prime.

It is a super-2 number, since 2×196091969² = 76904120612593922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (196091963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98045984 + 98045985.

It is an arithmetic number, because the mean of its divisors is an integer number (98045985).

Almost surely, 2^196091969 is an apocalyptic number.

It is an amenable number.

196091969 is a deficient number, since it is larger than the sum of its proper divisors (1).

196091969 is an equidigital number, since it uses as much as digits as its factorization.

196091969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 196091969 is about 14003.2842219245. The cubic root of 196091969 is about 580.9694142881.

The spelling of 196091969 in words is "one hundred ninety-six million, ninety-one thousand, nine hundred sixty-nine".