19609123 has 2 divisors, whose sum is σ = 19609124. Its totient is φ = 19609122.

The previous prime is 19609097. The next prime is 19609129. The reversal of 19609123 is 32190691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19609123 - 2¹⁷ = 19478051 is a prime.

It is not a weakly prime, because it can be changed into another prime (19609129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9804561 + 9804562.

It is an arithmetic number, because the mean of its divisors is an integer number (9804562).

Almost surely, 2^19609123 is an apocalyptic number.

19609123 is a deficient number, since it is larger than the sum of its proper divisors (1).

19609123 is an equidigital number, since it uses as much as digits as its factorization.

19609123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 19609123 is about 4428.2189421934. The cubic root of 19609123 is about 269.6617758495.

The spelling of 19609123 in words is "nineteen million, six hundred nine thousand, one hundred twenty-three".