19719103 has 2 divisors, whose sum is σ = 19719104. Its totient is φ = 19719102.

The previous prime is 19719079. The next prime is 19719121. The reversal of 19719103 is 30191791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19719103 - 2⁵ = 19719071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19719143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9859551 + 9859552.

It is an arithmetic number, because the mean of its divisors is an integer number (9859552).

Almost surely, 2^19719103 is an apocalyptic number.

19719103 is a deficient number, since it is larger than the sum of its proper divisors (1).

19719103 is an equidigital number, since it uses as much as digits as its factorization.

19719103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 19719103 is about 4440.6196639658. The cubic root of 19719103 is about 270.1649791899.

The spelling of 19719103 in words is "nineteen million, seven hundred nineteen thousand, one hundred three".