19448497 has 2 divisors, whose sum is σ = 19448498. Its totient is φ = 19448496.

The previous prime is 19448491. The next prime is 19448519. The reversal of 19448497 is 79484491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19439281 + 9216 = 4409^2 + 96^2 .

It is an emirp because it is prime and its reverse (79484491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19448497 - 2³ = 19448489 is a prime.

It is not a weakly prime, because it can be changed into another prime (19448491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9724248 + 9724249.

It is an arithmetic number, because the mean of its divisors is an integer number (9724249).

Almost surely, 2^19448497 is an apocalyptic number.

It is an amenable number.

19448497 is a deficient number, since it is larger than the sum of its proper divisors (1).

19448497 is an equidigital number, since it uses as much as digits as its factorization.

19448497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 19448497 is about 4410.0450111082. The cubic root of 19448497 is about 268.9234544947.

The spelling of 19448497 in words is "nineteen million, four hundred forty-eight thousand, four hundred ninety-seven".