196281893 has 2 divisors, whose sum is σ = 196281894. Its totient is φ = 196281892.

The previous prime is 196281853. The next prime is 196281959. The reversal of 196281893 is 398182691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121925764 + 74356129 = 11042^2 + 8623^2 .

It is a cyclic number.

It is not a de Polignac number, because 196281893 - 2¹⁰ = 196280869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196281853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98140946 + 98140947.

It is an arithmetic number, because the mean of its divisors is an integer number (98140947).

Almost surely, 2^196281893 is an apocalyptic number.

It is an amenable number.

196281893 is a deficient number, since it is larger than the sum of its proper divisors (1).

196281893 is an equidigital number, since it uses as much as digits as its factorization.

196281893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 47.

The square root of 196281893 is about 14010.0639898610. The cubic root of 196281893 is about 581.1569188752.

The spelling of 196281893 in words is "one hundred ninety-six million, two hundred eighty-one thousand, eight hundred ninety-three".