196512887 has 2 divisors, whose sum is σ = 196512888. Its totient is φ = 196512886.

The previous prime is 196512871. The next prime is 196512889. The reversal of 196512887 is 788215691.

It is a strong prime.

It is an emirp because it is prime and its reverse (788215691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196512887 - 2⁴ = 196512871 is a prime.

It is a super-3 number, since 3×196512887³ (a number of 26 digits) contains 333 as substring.

Together with 196512889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196512889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98256443 + 98256444.

It is an arithmetic number, because the mean of its divisors is an integer number (98256444).

Almost surely, 2^196512887 is an apocalyptic number.

196512887 is a deficient number, since it is larger than the sum of its proper divisors (1).

196512887 is an equidigital number, since it uses as much as digits as its factorization.

196512887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 47.

The square root of 196512887 is about 14018.3054254072. The cubic root of 196512887 is about 581.3848073339.

The spelling of 196512887 in words is "one hundred ninety-six million, five hundred twelve thousand, eight hundred eighty-seven".