19044001 has 2 divisors, whose sum is σ = 19044002. Its totient is φ = 19044000.

The previous prime is 19043993. The next prime is 19044019. The reversal of 19044001 is 10044091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18190225 + 853776 = 4265^2 + 924^2 .

It is an emirp because it is prime and its reverse (10044091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19044001 - 2³ = 19043993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19044001.

It is not a weakly prime, because it can be changed into another prime (19044901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9522000 + 9522001.

It is an arithmetic number, because the mean of its divisors is an integer number (9522001).

Almost surely, 2^19044001 is an apocalyptic number.

It is an amenable number.

19044001 is a deficient number, since it is larger than the sum of its proper divisors (1).

19044001 is an equidigital number, since it uses as much as digits as its factorization.

19044001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 19044001 is about 4363.9432856076. The cubic root of 19044001 is about 267.0459926287.

Adding to 19044001 its reverse (10044091), we get a palindrome (29088092).

The spelling of 19044001 in words is "nineteen million, forty-four thousand, one".