19112449 has 2 divisors, whose sum is σ = 19112450. Its totient is φ = 19112448.

The previous prime is 19112417. The next prime is 19112497. The reversal of 19112449 is 94421191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15944049 + 3168400 = 3993^2 + 1780^2 .

It is an emirp because it is prime and its reverse (94421191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19112449 - 2⁵ = 19112417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19112449.

It is not a weakly prime, because it can be changed into another prime (19112749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9556224 + 9556225.

It is an arithmetic number, because the mean of its divisors is an integer number (9556225).

Almost surely, 2^19112449 is an apocalyptic number.

It is an amenable number.

19112449 is a deficient number, since it is larger than the sum of its proper divisors (1).

19112449 is an equidigital number, since it uses as much as digits as its factorization.

19112449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 31.

The square root of 19112449 is about 4371.7786997971. The cubic root of 19112449 is about 267.3655492270.

The spelling of 19112449 in words is "nineteen million, one hundred twelve thousand, four hundred forty-nine".