19443237241 has 2 divisors, whose sum is σ = 19443237242. Its totient is φ = 19443237240.

The previous prime is 19443237227. The next prime is 19443237353. The reversal of 19443237241 is 14273234491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13046436841 + 6396800400 = 114221^2 + 79980^2 .

It is an emirp because it is prime and its reverse (14273234491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19443237241 - 2⁷ = 19443237113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19443237194 and 19443237203.

It is not a weakly prime, because it can be changed into another prime (19443237211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9721618620 + 9721618621.

It is an arithmetic number, because the mean of its divisors is an integer number (9721618621).

Almost surely, 2^19443237241 is an apocalyptic number.

It is an amenable number.

19443237241 is a deficient number, since it is larger than the sum of its proper divisors (1).

19443237241 is an equidigital number, since it uses as much as digits as its factorization.

19443237241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 40.

The spelling of 19443237241 in words is "nineteen billion, four hundred forty-three million, two hundred thirty-seven thousand, two hundred forty-one".