19776041 has 2 divisors, whose sum is σ = 19776042. Its totient is φ = 19776040.

The previous prime is 19776037. The next prime is 19776077. The reversal of 19776041 is 14067791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19616041 + 160000 = 4429^2 + 400^2 .

It is an emirp because it is prime and its reverse (14067791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19776041 - 2² = 19776037 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 19775992 and 19776010.

It is not a weakly prime, because it can be changed into another prime (19778041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9888020 + 9888021.

It is an arithmetic number, because the mean of its divisors is an integer number (9888021).

Almost surely, 2^19776041 is an apocalyptic number.

It is an amenable number.

19776041 is a deficient number, since it is larger than the sum of its proper divisors (1).

19776041 is an equidigital number, since it uses as much as digits as its factorization.

19776041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 19776041 is about 4447.0260849246. The cubic root of 19776041 is about 270.4247589530.

The spelling of 19776041 in words is "nineteen million, seven hundred seventy-six thousand, forty-one".