196309943 has 2 divisors, whose sum is σ = 196309944. Its totient is φ = 196309942.

The previous prime is 196309907. The next prime is 196309973. The reversal of 196309943 is 349903691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 196309943 - 2¹² = 196305847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 196309894 and 196309903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196309973) 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, 98154971 + 98154972.

It is an arithmetic number, because the mean of its divisors is an integer number (98154972).

Almost surely, 2^196309943 is an apocalyptic number.

196309943 is a deficient number, since it is larger than the sum of its proper divisors (1).

196309943 is an equidigital number, since it uses as much as digits as its factorization.

196309943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 196309943 is about 14011.0650201903. The cubic root of 196309943 is about 581.1846012981.

The spelling of 196309943 in words is "one hundred ninety-six million, three hundred nine thousand, nine hundred forty-three".