19245973 has 2 divisors, whose sum is σ = 19245974. Its totient is φ = 19245972.

The previous prime is 19245893. The next prime is 19245979. The reversal of 19245973 is 37954291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13965169 + 5280804 = 3737^2 + 2298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19245973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19245979) 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, 9622986 + 9622987.

It is an arithmetic number, because the mean of its divisors is an integer number (9622987).

Almost surely, 2^19245973 is an apocalyptic number.

It is an amenable number.

19245973 is a deficient number, since it is larger than the sum of its proper divisors (1).

19245973 is an equidigital number, since it uses as much as digits as its factorization.

19245973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 19245973 is about 4387.0232504513. The cubic root of 19245973 is about 267.9867307977.

The spelling of 19245973 in words is "nineteen million, two hundred forty-five thousand, nine hundred seventy-three".