17822249989 has 2 divisors, whose sum is σ = 17822249990. Its totient is φ = 17822249988.

The previous prime is 17822249981. The next prime is 17822250007. The reversal of 17822249989 is 98994222871.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12720005089 + 5102244900 = 112783^2 + 71430^2 .

It is a cyclic number.

It is not a de Polignac number, because 17822249989 - 2³ = 17822249981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17822249981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8911124994 + 8911124995.

It is an arithmetic number, because the mean of its divisors is an integer number (8911124995).

Almost surely, 2^17822249989 is an apocalyptic number.

It is an amenable number.

17822249989 is a deficient number, since it is larger than the sum of its proper divisors (1).

17822249989 is an equidigital number, since it uses as much as digits as its factorization.

17822249989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 61.

The spelling of 17822249989 in words is "seventeen billion, eight hundred twenty-two million, two hundred forty-nine thousand, nine hundred eighty-nine".