196036991 has 2 divisors, whose sum is σ = 196036992. Its totient is φ = 196036990.

The previous prime is 196036969. The next prime is 196036993. The reversal of 196036991 is 199630691.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 196036991 - 2¹⁸ = 195774847 is a prime.

Together with 196036993, 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 (196036993) 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, 98018495 + 98018496.

It is an arithmetic number, because the mean of its divisors is an integer number (98018496).

Almost surely, 2^196036991 is an apocalyptic number.

196036991 is a deficient number, since it is larger than the sum of its proper divisors (1).

196036991 is an equidigital number, since it uses as much as digits as its factorization.

196036991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 196036991 is about 14001.3210448157. The cubic root of 196036991 is about 580.9151140497.

The spelling of 196036991 in words is "one hundred ninety-six million, thirty-six thousand, nine hundred ninety-one".