19630123 has 2 divisors, whose sum is σ = 19630124. Its totient is φ = 19630122.

The previous prime is 19630069. The next prime is 19630183. The reversal of 19630123 is 32103691.

It is a weak prime.

It is an emirp because it is prime and its reverse (32103691) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19630123 is a prime.

It is not a weakly prime, because it can be changed into another prime (19630183) 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, 9815061 + 9815062.

It is an arithmetic number, because the mean of its divisors is an integer number (9815062).

Almost surely, 2^19630123 is an apocalyptic number.

19630123 is a deficient number, since it is larger than the sum of its proper divisors (1).

19630123 is an equidigital number, since it uses as much as digits as its factorization.

19630123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 19630123 is about 4430.5894641684. The cubic root of 19630123 is about 269.7580044768.

The spelling of 19630123 in words is "nineteen million, six hundred thirty thousand, one hundred twenty-three".