196505423 has 2 divisors, whose sum is σ = 196505424. Its totient is φ = 196505422.

The previous prime is 196505401. The next prime is 196505437. The reversal of 196505423 is 324505691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 196505423 - 2¹⁸ = 196243279 is a prime.

It is a super-2 number, since 2×196505423² = 77228762536817858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196505453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98252711 + 98252712.

It is an arithmetic number, because the mean of its divisors is an integer number (98252712).

Almost surely, 2^196505423 is an apocalyptic number.

196505423 is a deficient number, since it is larger than the sum of its proper divisors (1).

196505423 is an equidigital number, since it uses as much as digits as its factorization.

196505423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 196505423 is about 14018.0391995457. The cubic root of 196505423 is about 581.3774464746.

The spelling of 196505423 in words is "one hundred ninety-six million, five hundred five thousand, four hundred twenty-three".