196644743 has 2 divisors, whose sum is σ = 196644744. Its totient is φ = 196644742.

The previous prime is 196644739. The next prime is 196644769. The reversal of 196644743 is 347446691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196644743 - 2² = 196644739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 196644694 and 196644703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196644713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98322371 + 98322372.

It is an arithmetic number, because the mean of its divisors is an integer number (98322372).

Almost surely, 2^196644743 is an apocalyptic number.

196644743 is a deficient number, since it is larger than the sum of its proper divisors (1).

196644743 is an equidigital number, since it uses as much as digits as its factorization.

196644743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 196644743 is about 14023.0076303195. The cubic root of 196644743 is about 581.5148105739.

The spelling of 196644743 in words is "one hundred ninety-six million, six hundred forty-four thousand, seven hundred forty-three".