19408001 has 2 divisors, whose sum is σ = 19408002. Its totient is φ = 19408000.

The previous prime is 19407977. The next prime is 19408003. The reversal of 19408001 is 10080491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19228225 + 179776 = 4385^2 + 424^2 .

It is an emirp because it is prime and its reverse (10080491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19408001 - 2⁶ = 19407937 is a prime.

It is a Sophie Germain prime.

Together with 19408003, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19408003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9704000 + 9704001.

It is an arithmetic number, because the mean of its divisors is an integer number (9704001).

Almost surely, 2^19408001 is an apocalyptic number.

It is an amenable number.

19408001 is a deficient number, since it is larger than the sum of its proper divisors (1).

19408001 is an equidigital number, since it uses as much as digits as its factorization.

19408001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 19408001 is about 4405.4512822184. The cubic root of 19408001 is about 268.7366724236.

Adding to 19408001 its reverse (10080491), we get a palindrome (29488492).

The spelling of 19408001 in words is "nineteen million, four hundred eight thousand, one".