196939741 has 2 divisors, whose sum is σ = 196939742. Its totient is φ = 196939740.

The previous prime is 196939739. The next prime is 196939763. The reversal of 196939741 is 147939691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175456516 + 21483225 = 13246^2 + 4635^2 .

It is a cyclic number.

It is not a de Polignac number, because 196939741 - 2¹ = 196939739 is a prime.

Together with 196939739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196939711) 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, 98469870 + 98469871.

It is an arithmetic number, because the mean of its divisors is an integer number (98469871).

Almost surely, 2^196939741 is an apocalyptic number.

It is an amenable number.

196939741 is a deficient number, since it is larger than the sum of its proper divisors (1).

196939741 is an equidigital number, since it uses as much as digits as its factorization.

196939741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 49.

The square root of 196939741 is about 14033.5220454453. The cubic root of 196939741 is about 581.8054531358.

Subtracting from 196939741 its reverse (147939691), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 196939741 in words is "one hundred ninety-six million, nine hundred thirty-nine thousand, seven hundred forty-one".