19623113 has 2 divisors, whose sum is σ = 19623114. Its totient is φ = 19623112.

The previous prime is 19623041. The next prime is 19623119. The reversal of 19623113 is 31132691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15077689 + 4545424 = 3883^2 + 2132^2 .

It is an emirp because it is prime and its reverse (31132691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19623113 - 2⁸ = 19622857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19623119) 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, 9811556 + 9811557.

It is an arithmetic number, because the mean of its divisors is an integer number (9811557).

Almost surely, 2^19623113 is an apocalyptic number.

It is an amenable number.

19623113 is a deficient number, since it is larger than the sum of its proper divisors (1).

19623113 is an equidigital number, since it uses as much as digits as its factorization.

19623113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 26.

The square root of 19623113 is about 4429.7983024061. The cubic root of 19623113 is about 269.7258900788.

The spelling of 19623113 in words is "nineteen million, six hundred twenty-three thousand, one hundred thirteen".