19130123 has 2 divisors, whose sum is σ = 19130124. Its totient is φ = 19130122.

The previous prime is 19130119. The next prime is 19130143. The reversal of 19130123 is 32103191.

It is an a-pointer prime, because the next prime (19130143) can be obtained adding 19130123 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19130123 - 2² = 19130119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19130095 and 19130104.

It is not a weakly prime, because it can be changed into another prime (19130143) 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, 9565061 + 9565062.

It is an arithmetic number, because the mean of its divisors is an integer number (9565062).

Almost surely, 2^19130123 is an apocalyptic number.

19130123 is a deficient number, since it is larger than the sum of its proper divisors (1).

19130123 is an equidigital number, since it uses as much as digits as its factorization.

19130123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 19130123 is about 4373.7996067493. The cubic root of 19130123 is about 267.4479381606.

The spelling of 19130123 in words is "nineteen million, one hundred thirty thousand, one hundred twenty-three".