17380923649 has 2 divisors, whose sum is σ = 17380923650. Its totient is φ = 17380923648.

The previous prime is 17380923583. The next prime is 17380923731. The reversal of 17380923649 is 94632908371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13240644624 + 4140279025 = 115068^2 + 64345^2 .

It is a cyclic number.

It is not a de Polignac number, because 17380923649 - 2¹⁵ = 17380890881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17380923596 and 17380923605.

It is not a weakly prime, because it can be changed into another prime (17380923349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8690461824 + 8690461825.

It is an arithmetic number, because the mean of its divisors is an integer number (8690461825).

Almost surely, 2^17380923649 is an apocalyptic number.

It is an amenable number.

17380923649 is a deficient number, since it is larger than the sum of its proper divisors (1).

17380923649 is an equidigital number, since it uses as much as digits as its factorization.

17380923649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 17380923649 in words is "seventeen billion, three hundred eighty million, nine hundred twenty-three thousand, six hundred forty-nine".