196281539 has 2 divisors, whose sum is σ = 196281540. Its totient is φ = 196281538.

The previous prime is 196281523. The next prime is 196281577. The reversal of 196281539 is 935182691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196281539 - 2⁴ = 196281523 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196281539.

It is not a weakly prime, because it can be changed into another prime (196221539) 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, 98140769 + 98140770.

It is an arithmetic number, because the mean of its divisors is an integer number (98140770).

Almost surely, 2^196281539 is an apocalyptic number.

196281539 is a deficient number, since it is larger than the sum of its proper divisors (1).

196281539 is an equidigital number, since it uses as much as digits as its factorization.

196281539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 44.

The square root of 196281539 is about 14010.0513560800. The cubic root of 196281539 is about 581.1565694973.

The spelling of 196281539 in words is "one hundred ninety-six million, two hundred eighty-one thousand, five hundred thirty-nine".